WO2005037410A1 - Apparatus for cleaning contaminated air - Google Patents

Apparatus for cleaning contaminated air Download PDF

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Publication number
WO2005037410A1
WO2005037410A1 PCT/DK2004/000709 DK2004000709W WO2005037410A1 WO 2005037410 A1 WO2005037410 A1 WO 2005037410A1 DK 2004000709 W DK2004000709 W DK 2004000709W WO 2005037410 A1 WO2005037410 A1 WO 2005037410A1
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WO
WIPO (PCT)
Prior art keywords
house
lamps
ring
air stream
air
Prior art date
Application number
PCT/DK2004/000709
Other languages
French (fr)
Inventor
Jimmy Larsen
Original Assignee
Jimco A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jimco A/S filed Critical Jimco A/S
Publication of WO2005037410A1 publication Critical patent/WO2005037410A1/en

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Classifications

    • 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
    • B01D53/007—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 irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804—UV light

Definitions

  • the invention is relating to an apparatus for cleaning contaminated air, comprising a house defining an axis, at least one UV-lamp mounted in the house and driving means for driving the air in a stream through the house.
  • Organic substances in the form of vapours or particles are to a large extent created as undesired products in connection with many production processes within the industry, for example incomplete combustion where volatile organic hydrocarbons are released because the hydrocarbons are not completely converted to C0 2 .
  • Other examples where organic substances are submitted to the surroundings are preparation and use of lacquer and paint, production of metal and plastic, biogas plants, agriculture and also large parts of the food industry.
  • volatile organic compounds are chemical substances that are toxic and carcinogenic, and available information establishes that long-term exposures to volatile organic hydrocarbons may cause chronic health effects e.g., structural damage to lung tissue, accelerated decline in baseline lung function, eye and skin irritation and nausea. It is therefore normally not allowed to leak air contaminated with the organic substances to the surroundings. Therefore, many governments have prescribed that the contaminated air must be purified before it is led into the surroundings.
  • Ozone is a highly reactive substance, which is why it is such a powerful and efficient cleaner and purifier.
  • review of scientific research shows that, for many of the chemicals commonly found in industry, the reaction process with ozone might take months or years (Boeniger, 1995) .
  • ozone may also increase indoor concentrations of formic acid (Zhang and Lioy, 1994) , both of which can irritate the lungs if produced in sufficient amounts.
  • US patent No. 6,179,969 discloses a filter device for cleaning a stream of contaminated air by means of a number of UV-lamps mounted in a house.
  • the air stream is passing a row of treatment chambers before arriving to the house.
  • the UV-lamps are mounted crosswise the air stream which is passing the UV- lamps only one time whereby the UV-light is not optimally utilized. It is a first aspect according to the invention to provide an apparatus of the type mentioned in the opening paragraph, which has a simple and reliable construction.
  • the contaminated air stream can in one embodiment of the apparatus according to the invention be rotated by being led crosswise the UV-lamps into the house in a peripheral area upstream the UV-lamps.
  • the contaminated air stream can be rotated by being led axially into the house via at least one coaxially mounted ring of guide blades placed upstream the inlet opening.
  • Said ring of guide blades can be stationary or rotateable.
  • the ring of guide blades can be rotated by means of a motor whereby the ring of guide blades and the motor constitutes a ventilating fan adapted for at the same time to generate and rotate the air stream.
  • additional hydrogen can according to the invention be added to the surface of the UV-lamps and/or to the air stream in the house, e.g. in the form of a fluid comprising hydrogen, such as water, whereby highly oxidative hydroxyl radicals is created.
  • the hydroxyl radicals are stable and very destructive to organic contaminants because they steal hydrogen atoms from the organic materials, leaving decaying carbon ions, e.g:
  • hydroxyl radicals are furthermore, in contrast to ozone (Shaughnessy, et al . 1994), effective in removing carbon monoxide by converting it into carbon dioxide:
  • the method according to the invention can decontaminate air a lot faster and more efficiently than with the known purifying apparatus which only uses ozone.
  • Some ultraviolet-light sources have an optimum work performance at a temperature below 45°C. In warm working places, as e.g. kitchens the temperature can easily exceed this temperature, and it is therefore necessary to cool the surrounding air in order to maintain the work performance .
  • the water can therefore advantageously be added in the form of atomized water (humidity) , which has a very large total surface and the air is therefore cooled momentarily.
  • the water can e.g. be heated before submitting it to the UV light source or the applicator could generate steam by heating.
  • the atomised water further has the advantage that the reactive water surface is extremely large, enabling a faster production of hydroxyl radicals.
  • the water also has the property that it in itself can take up impurities in the air stream whereby the water will be contaminated.
  • the house can, according to the invention, have a drain well arranged at a lower area of the house for reception of water, which by means of the centrifugal force in the whirling air stream are hurled against the wall of the house and then is flowing down the wall to the drain well. In this way is advantageously avoided that the contaminated water is thrown out into the environment but on the contrary is improving the purifying process.
  • Fig. 1 shows schematically a first embodiment of an apparatus according to the invention
  • Fig. 2 is a sectional view taken along the line II - II of fig. 1
  • Fig. 3 shows schematically a second embodiment of an apparatus according to the invention
  • Fig. 4 is a sectional view taken along the line IV - IV of fig. 3,
  • Fig. 5 is a sectional view taken along the line V - V of fig. 3 .
  • Fig. 6 is a sectional view taken along the line VI - VI of fig. 3.
  • the apparatus according to the invention can be used separately for cleaning contaminated air or in cooperation with or part of other apparatuses for carrying out parts of the cleaning process.
  • the apparatus can e.g. be part of the filter device disclosed- in US patent No. 6,179,969.
  • Fig. 1 and 2 shows a first embodiment of an apparatus 1 according to the invention for cleaning contaminated air.
  • the apparatus has a tube shaped house 2 defining an axis 3, which in this case is horizontal.
  • a number of UV-lamps 4 which during operation are radiating UV-light for the purifying process.
  • a ventilating fan 5 serves for generating the air stream which is entering the house in the direction of the shown arrow via an inlet duct 6 fluid connected with a peripheral area of the house crosswise the UV-lamps.
  • the air stream is in this way rotated in the direction of the arrows shown in fig. 2.
  • the purified air is thrown out into the environments in the direction of the arrow by means of the ventilating fan.
  • the rotating air stream forms a large whirl in the house and smaller whirls around the UV-lamps thereby forcing the impurities in the contaminated air stream to travel a long distance in the radiated UV-light whereby the contaminated air is far better purified than when travelling only a short distance as conventional.
  • Fig. 3 - 6 shows a second embodiment of an apparatus 7 according to the invention for cleaning contaminated air.
  • the apparatus has also in this case a tube shaped house 8 defining an axis 9, which in this case is vertical.
  • a number of UV-lamps 10 which during operation are radiating UV-light for purifying the contaminated air.
  • the contaminated air is entering the house via an inlet duct 11, which in the house has an extension 12 delimiting a drain well 13 together with the wall 14 of the house.
  • an outlet duct 15 At the end of the house opposite the inlet duct is arranged an outlet duct 15.
  • a ring of guide blades 16 is furthermore mounted in or close to the inlet duct.
  • the ring of guide blades stationary mounted in the inlet duct whereby the air stream is generated by means of a separate ventilating fan, (not shown) .
  • the air stream is rotated when passing said ring of guide blades .
  • the UV-lamps is in this case arranged in a ring around the axis of the house and a preferable hollow cylinder 18, which is placed inside said ring, is extending axially along the UV- lamps .
  • the cylinder can be coupled to the ring of guide blades whereby the cylinder rotates together with the guide blades thereby making a contribution to rotating the contaminated air stream.
  • the cylinder can, for increasing this effect, additional be provided with guide blades of any suitable kinds, (not shown) .
  • the cylinder is, in the embodiment shown in fig. 3 - 7, stationary mounted in the house.
  • the cylinder is advantageously forcing the contaminated air to pass close by the UV-lamps thereby increasing the effect of the radiated UV- light on the impurities in the air to be cleaned, since the intensity of the UV-light is strongest close to the UV-lamps.
  • This effect can be further improved by providing the cylinder and/or the inner side of the wall of the house with an UV- light reflecting surface, (not shown) .
  • the apparatus according to the invention therefore optionally can be equipped with an applicator for applying the UV-lamps an/ore the air stream in the house with e.g. water.
  • the applicator comprises a separate fluid source 19 and a device 20 for applying fluid from said source to the surface of and/or the air surrounding the UV-lamps.
  • Said device can be of any suitable kind.
  • the devise a number of nozzles 21 arranged on a ring shaped pipe 22 (fig. 5 and 6) which are connected with the separate fluid source via a pipe 23 with a fluid pump 24 for driving the fluid through the nozzles under pressure whereby the fluid is atomized and thereby functions optimally in the cleaning process.
  • the fluid is relatively heavy and is therefore hurled against the wall of the house by the centrifugal force acting upon the fluid.
  • the fluid is flowing down the wall to the drain well having an outlet 25 for leading the fluid out of the house.
  • the fluid tends to take up some of the impurities in the contaminated air and is therefore contributing to the cleaning process. But the fluid also is contaminated itself. By separating this contaminated fluid from the cleaned air is advantageously avoided that contaminated water unwanted is thrown out into the environments.

Abstract

An apparatus for cleaning contaminated air is comprising a mainly tube shaped house (2;8)defining an axis (3;9), at least one UV-lamp (4;10) mounted in the house mainly parallel with said axis, driving means (5;16,17) for driving the air in a stream through the house, and rotation means (16,17) for rotating said air stream. The apparatus has a simple and reliable construction with which the UV-light, which is radiated of the UV-lamps, is optimally utilized, and contaminated air is purified more effectively than previous known.

Description

Apparatus for cleaning contaminated air
The invention is relating to an apparatus for cleaning contaminated air, comprising a house defining an axis, at least one UV-lamp mounted in the house and driving means for driving the air in a stream through the house.
Organic substances in the form of vapours or particles are to a large extent created as undesired products in connection with many production processes within the industry, for example incomplete combustion where volatile organic hydrocarbons are released because the hydrocarbons are not completely converted to C02. Other examples where organic substances are submitted to the surroundings are preparation and use of lacquer and paint, production of metal and plastic, biogas plants, agriculture and also large parts of the food industry.
Most volatile organic compounds are chemical substances that are toxic and carcinogenic, and available information establishes that long-term exposures to volatile organic hydrocarbons may cause chronic health effects e.g., structural damage to lung tissue, accelerated decline in baseline lung function, eye and skin irritation and nausea. It is therefore normally not allowed to leak air contaminated with the organic substances to the surroundings. Therefore, many governments have prescribed that the contaminated air must be purified before it is led into the surroundings.
This purification normally takes place by filtering the contaminated air in, e.g. grease filters and carbon filters. Mechanical filters of this type are, however, rather expensive in use as they need to be cleaned at short intervals and frequently have to be replaced.
It is furthermore well known to use ozone for removing organic substances from contaminated air. Ozone is a highly reactive substance, which is why it is such a powerful and efficient cleaner and purifier. However, review of scientific research shows that, for many of the chemicals commonly found in industry, the reaction process with ozone might take months or years (Boeniger, 1995) .
It has e.g. been shown that ozone is not effective in removing carbon monoxide (Shaughnessy, et al . 1994) or formaldehyde (Esswein and Boeniger, 1994) .
Furthermore, in a laboratory experiment were ozone was mixed with chemicals from new carpet, it was shown that even though ozone reduced many of these chemicals, including those, which can produce new carpet odor, the reaction produced a variety of aldehydes. This resulted in that the total concentration of organic chemicals in the air increased rather than decreased after the introduction of ozone. (Weschler, et . al . , 1992).
In addition to aldehydes (Weschler, et. al . , 1992), ozone may also increase indoor concentrations of formic acid (Zhang and Lioy, 1994) , both of which can irritate the lungs if produced in sufficient amounts.
Some of the potential by-products produced by ozone's reactions with other chemicals are themselves very reactive and capable of producing irritating and corrosive by-products (Weschler and Shields 1997) .
US patent No. 6,179,969 discloses a filter device for cleaning a stream of contaminated air by means of a number of UV-lamps mounted in a house. The air stream is passing a row of treatment chambers before arriving to the house. The UV-lamps are mounted crosswise the air stream which is passing the UV- lamps only one time whereby the UV-light is not optimally utilized. It is a first aspect according to the invention to provide an apparatus of the type mentioned in the opening paragraph, which has a simple and reliable construction.
It is a second aspect according to the invention to provide an apparatus of the type mentioned in the opening paragraph, with which contaminated air can be purified more effectively than previous known.
It is a third aspect according to the invention to provide an apparatus of the type mentioned in the opening paragraph where the UV-light, which is radiated of the UV-lamps, is fully utilized.
By according to the invention simply rotating the contaminated air stream in a mainly tube shaped house, having co-axial inlet - and outlet openings, advantageously is obtained that the contaminated air stream is passing the UV-lights not only one time as conventional but several times whereby the UV- light optimally is utilized and the contaminated air effectively is purified.
By rotating the contaminated air stream is formed a large whirl in the house and at the same time also smaller whirls around the UV-lamps, thereby forcing the contaminated air to follow a far longer way between the inlet - and outlet openings of the house than the straight line between these openings. The velocity of the air stream therefore will increase correspondingly causing the air stream to be turbulent. The turbulence of the air is further increasing the resulting distance, which the impurities in the contaminated air have to travel when passing through the radiation from the UV-lamps .
The contaminated air stream can in one embodiment of the apparatus according to the invention be rotated by being led crosswise the UV-lamps into the house in a peripheral area upstream the UV-lamps.
In another embodiment of the apparatus according to the invention the contaminated air stream can be rotated by being led axially into the house via at least one coaxially mounted ring of guide blades placed upstream the inlet opening.
Said ring of guide blades can be stationary or rotateable. In the last-mentioned case the ring of guide blades can be rotated by means of a motor whereby the ring of guide blades and the motor constitutes a ventilating fan adapted for at the same time to generate and rotate the air stream.
By placing the UV-lamps in a ring and mounting a cylinder coaxially inside said ring is advantageously obtained that the velocity of the contaminated air stream is large and that the impurities in the air stream are passing the UV-lamps in an area where the radiation from the UV-lamps is strongest. This effect can be improved further by providing the cylinder and/or the inner side of the wall of the house with an UV- light reflecting surface.
For improving the purifying of the contaminated air additional hydrogen can according to the invention be added to the surface of the UV-lamps and/or to the air stream in the house, e.g. in the form of a fluid comprising hydrogen, such as water, whereby highly oxidative hydroxyl radicals is created.
03 + light -> 0* (0* Excited) + 02
0* + H20 -> 2 0H (hydroxyl radical)
Even though the decontamination of organic substances with ozone generates some H20, this has proven to be in too small a quantity to create enough hydroxyl radicals to obtain a measurable decontamination effect in the air. It is therefore necessary to supply additional hydrogen.
The hydroxyl radicals are stable and very destructive to organic contaminants because they steal hydrogen atoms from the organic materials, leaving decaying carbon ions, e.g:
CH4(g) + HO.(g) -> H3C- (g) + H20
The theft of hydrogen from organic molecules forms even stronger hydroxyl radical bonds with even higher oxidation potential .
The hydroxyl radicals are furthermore, in contrast to ozone (Shaughnessy, et al . 1994), effective in removing carbon monoxide by converting it into carbon dioxide:
CO(g) + HO- (g) -» C02(g) + H(g)
The process of creating ozone and hydroxyl radicals turns into a chain reaction resulting in the continual decay of organic material .
By adding water to the source of ultraviolet light the method according to the invention can decontaminate air a lot faster and more efficiently than with the known purifying apparatus which only uses ozone.
It should be noted that it is preferable to use water, as this is a cheap and accessible source of hydrogen. However, any kind of fluid containing hydrogen can be used in the present invention.
Some ultraviolet-light sources have an optimum work performance at a temperature below 45°C. In warm working places, as e.g. kitchens the temperature can easily exceed this temperature, and it is therefore necessary to cool the surrounding air in order to maintain the work performance . The water can therefore advantageously be added in the form of atomized water (humidity) , which has a very large total surface and the air is therefore cooled momentarily.
In very cold surroundings the water can e.g. be heated before submitting it to the UV light source or the applicator could generate steam by heating.
The atomised water further has the advantage that the reactive water surface is extremely large, enabling a faster production of hydroxyl radicals.
The water also has the property that it in itself can take up impurities in the air stream whereby the water will be contaminated. The house can, according to the invention, have a drain well arranged at a lower area of the house for reception of water, which by means of the centrifugal force in the whirling air stream are hurled against the wall of the house and then is flowing down the wall to the drain well. In this way is advantageously avoided that the contaminated water is thrown out into the environment but on the contrary is improving the purifying process.
The invention will be explained in greater details below where further advantageous properties and example embodiments are described with reference to the drawings, in which
Fig. 1 shows schematically a first embodiment of an apparatus according to the invention,
Fig. 2 is a sectional view taken along the line II - II of fig. 1, Fig. 3 shows schematically a second embodiment of an apparatus according to the invention,
Fig. 4 is a sectional view taken along the line IV - IV of fig. 3,
Fig. 5 is a sectional view taken along the line V - V of fig. 3 , and
Fig. 6 is a sectional view taken along the line VI - VI of fig. 3.
The apparatus according to the invention can be used separately for cleaning contaminated air or in cooperation with or part of other apparatuses for carrying out parts of the cleaning process. The apparatus can e.g. be part of the filter device disclosed- in US patent No. 6,179,969.
Fig. 1 and 2 shows a first embodiment of an apparatus 1 according to the invention for cleaning contaminated air. The apparatus has a tube shaped house 2 defining an axis 3, which in this case is horizontal. In the house is in parallel with said axis mounted a number of UV-lamps 4, which during operation are radiating UV-light for the purifying process. A ventilating fan 5 serves for generating the air stream which is entering the house in the direction of the shown arrow via an inlet duct 6 fluid connected with a peripheral area of the house crosswise the UV-lamps. The air stream is in this way rotated in the direction of the arrows shown in fig. 2. The purified air is thrown out into the environments in the direction of the arrow by means of the ventilating fan.
The rotating air stream forms a large whirl in the house and smaller whirls around the UV-lamps thereby forcing the impurities in the contaminated air stream to travel a long distance in the radiated UV-light whereby the contaminated air is far better purified than when travelling only a short distance as conventional.
Fig. 3 - 6 shows a second embodiment of an apparatus 7 according to the invention for cleaning contaminated air. The apparatus has also in this case a tube shaped house 8 defining an axis 9, which in this case is vertical. In the house is in parallel with said axis mounted a number of UV-lamps 10, which during operation are radiating UV-light for purifying the contaminated air.
The contaminated air is entering the house via an inlet duct 11, which in the house has an extension 12 delimiting a drain well 13 together with the wall 14 of the house. At the end of the house opposite the inlet duct is arranged an outlet duct 15. A ring of guide blades 16 is furthermore mounted in or close to the inlet duct.
In one embodiment (not shown) is the ring of guide blades stationary mounted in the inlet duct whereby the air stream is generated by means of a separate ventilating fan, (not shown) . The air stream is rotated when passing said ring of guide blades .
In the embodiment shown is the ring of guide blades, however, rotateable mounted in the inlet duct and during operation rotated by means of a motor 17 thereby forming an integrated ventilating fan 16,17 for both generating and rotating the air stream.
The UV-lamps is in this case arranged in a ring around the axis of the house and a preferable hollow cylinder 18, which is placed inside said ring, is extending axially along the UV- lamps . The cylinder can be coupled to the ring of guide blades whereby the cylinder rotates together with the guide blades thereby making a contribution to rotating the contaminated air stream. The cylinder can, for increasing this effect, additional be provided with guide blades of any suitable kinds, (not shown) .
The cylinder is, in the embodiment shown in fig. 3 - 7, stationary mounted in the house. The cylinder is advantageously forcing the contaminated air to pass close by the UV-lamps thereby increasing the effect of the radiated UV- light on the impurities in the air to be cleaned, since the intensity of the UV-light is strongest close to the UV-lamps.
This effect can be further improved by providing the cylinder and/or the inner side of the wall of the house with an UV- light reflecting surface, (not shown) .
When additional hydrogen is added in e.g. the form of fluid comprising hydrogen, such as water, highly oxidative hydroxyl radicals is created which are capable to improve the cleaning effect of the apparatus according to the invention.
The apparatus according to the invention therefore optionally can be equipped with an applicator for applying the UV-lamps an/ore the air stream in the house with e.g. water.
Such an applicator is shown in fig. 3 - 6. The applicator comprises a separate fluid source 19 and a device 20 for applying fluid from said source to the surface of and/or the air surrounding the UV-lamps.
Said device can be of any suitable kind. In the example shown is the devise a number of nozzles 21 arranged on a ring shaped pipe 22 (fig. 5 and 6) which are connected with the separate fluid source via a pipe 23 with a fluid pump 24 for driving the fluid through the nozzles under pressure whereby the fluid is atomized and thereby functions optimally in the cleaning process.
The fluid is relatively heavy and is therefore hurled against the wall of the house by the centrifugal force acting upon the fluid. The fluid is flowing down the wall to the drain well having an outlet 25 for leading the fluid out of the house.
The fluid tends to take up some of the impurities in the contaminated air and is therefore contributing to the cleaning process. But the fluid also is contaminated itself. By separating this contaminated fluid from the cleaned air is advantageously avoided that contaminated water unwanted is thrown out into the environments.

Claims

Claims
1. An apparatus for cleaning contaminated air, comprising a mainly tube shaped house (2 ; 8) defining an axis (3;9), at least one UV-lamp (4; 10) mounted in the house mainly parallel with said axis, driving means (5,-16, 17) for driving the air in a stream through the house, and rotation means (16,17) for rotating said air stream.
2. The apparatus according to claim 1, characterized in that the house (2; 8) has mainly coaxially arranged inlet - and outlet openings for passage of the air stream.
3. The apparatus according to claim 1 or 2 , characterized in that the driving means is a ventilating fan (5) mounted downstream the outlet opening.
4. The apparatus according to claim 1, 2 or 3, characterized in that the rotation means is at least one ring of guide blades (16) stationary mounted upstream the inlet opening .
5. The apparatus according to claim 1, 2 or 3, characterized in that the driving - and rotating means form a unit (16,17) comprising at least one ring of guide blades (16) rotateable mounted upstream the inlet opening and a motor (17) for during operation rotating said at least one ring of guide blades .
6. The apparatus according to any of the claims 1 - 5, characterized in that a number of UV-lamps (10) is arranged along a ring, seen in section.
7. The apparatus according to any of the claims 1 - 6, characterized in that it comprises a cylinder (18) coaxially mounted in the house (8) with a diameter lesser than the diameter of the ring of UV-lamps.
8. The apparatus according to claim 7, characterized in that the inner side of the house (8) and/or the outer side of the cylinder (18) are adapted to reflect UV-light.
9. The apparatus according to claim 1, 2 or 3, characterized in that the rotation means comprises an upstream placed inlet duct (6) for leading the contaminated air stream into the house (2) of the apparatus (1) , and that the inlet duct is connected with a peripheral area of the house crosswise the UV-lamps (4) .
10. The apparatus according to any of the claims 1 -9, characterized in that it comprises an applicator (19,20,21,22,23,24) for applying the UV- lamps and/ore the air stream in the house with a fluid as e.g. water.
11. The apparatus according to any of the claims 1 - 10, characterized in that the axis (9) of the house (8) is mainly vertical and that a drain well (25) is arranged at a lower area of the house .
PCT/DK2004/000709 2003-10-15 2004-10-15 Apparatus for cleaning contaminated air WO2005037410A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200301517 2003-10-15
DKPA200301517 2003-10-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110394018A (en) * 2019-07-25 2019-11-01 东莞市康莱环保科技有限公司 A kind of plastic cement UV paint sprayed with adhesive organic exhaust gas pretreating device
CN110787605A (en) * 2019-11-07 2020-02-14 安徽天顺环保设备股份有限公司 Environment-friendly efficient waste gas desulfurization, deodorization and dust removal equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2437110A1 (en) * 1974-08-01 1976-02-12 Spiess C F & Sohn Decompsn. of org. substances - present in inert gases in the form of odorous or otherwise undesirable vapours or aerosols
US5256379A (en) * 1991-12-23 1993-10-26 Deloach Anthony Apparatus and method for removing hydrocarbons from airstream
WO1997034682A1 (en) * 1996-03-18 1997-09-25 Eco-Aire Company, Inc Method and apparatus for sterilizing air

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2437110A1 (en) * 1974-08-01 1976-02-12 Spiess C F & Sohn Decompsn. of org. substances - present in inert gases in the form of odorous or otherwise undesirable vapours or aerosols
US5256379A (en) * 1991-12-23 1993-10-26 Deloach Anthony Apparatus and method for removing hydrocarbons from airstream
WO1997034682A1 (en) * 1996-03-18 1997-09-25 Eco-Aire Company, Inc Method and apparatus for sterilizing air

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110394018A (en) * 2019-07-25 2019-11-01 东莞市康莱环保科技有限公司 A kind of plastic cement UV paint sprayed with adhesive organic exhaust gas pretreating device
CN110787605A (en) * 2019-11-07 2020-02-14 安徽天顺环保设备股份有限公司 Environment-friendly efficient waste gas desulfurization, deodorization and dust removal equipment

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