CA2502382A1 - Apparatus and method for the treatment of odor and volatile organic compound contaminants in air emissions - Google Patents
Apparatus and method for the treatment of odor and volatile organic compound contaminants in air emissions Download PDFInfo
- Publication number
- CA2502382A1 CA2502382A1 CA002502382A CA2502382A CA2502382A1 CA 2502382 A1 CA2502382 A1 CA 2502382A1 CA 002502382 A CA002502382 A CA 002502382A CA 2502382 A CA2502382 A CA 2502382A CA 2502382 A1 CA2502382 A1 CA 2502382A1
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- Prior art keywords
- gas
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- cell
- odor
- volatile organic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/22—Ionisation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
-
- 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
- B01D53/32—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 electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
-
- 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
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
An odor removal system to neutralize odors and VOC emissions released into t he environment by commercial and/or industrial air streams utilizes Non-Thermal Plasma (NTP) to create a range of Reactive Oxygen Species (ROS) to cause the oxidation and/or reduction of odor causing molecules and VOC=s. The ROS is generated by drawing atmospheric and/or odorous air through a Dielectric Barner Discharge Plasma Generation Cell (DBDPGC). The g as is activated by passing it through the non-thermal plasma field in the DBDPGC, producing the ROS that are then immediately mixed into the odorous gas stream to be treated, or if it is the odorous gas that is passing through the NTP field, it is inherently mixed. When large volumes of gas, and/or extremely high odor load in combination with large gas volumes must be treated, multiple units can be combined in parallel to treat the gas. The DBDPGC has hermetically sealed hot electrodes and may be used in other applications.
Claims (28)
1. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions, comprising:
a dielectric barrier discharge non-thermal plasma (NTP) generation cell having a gas flow path therethrough, said cell having a plurality of electrically hot electrodes and ground electrodes positioned in the gas flow path so that gas flowing in the gas flow path will flow across a portion of these electrodes, at least the hot electrodes being hermetically sealed across the gas flow portion of the electrodes;
a cell gas inlet leading to the gas flow path through the cell; and a cell gas outlet for discharging gas that has passed through the cell.
a dielectric barrier discharge non-thermal plasma (NTP) generation cell having a gas flow path therethrough, said cell having a plurality of electrically hot electrodes and ground electrodes positioned in the gas flow path so that gas flowing in the gas flow path will flow across a portion of these electrodes, at least the hot electrodes being hermetically sealed across the gas flow portion of the electrodes;
a cell gas inlet leading to the gas flow path through the cell; and a cell gas outlet for discharging gas that has passed through the cell.
2. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 1, wherein the cell gas inlet is connected to a source of gas emissions, and the cell gas outlet discharges treated gas for discharge to the atmosphere.
3. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 1, additionally including a gas mixing chamber having a first mixing chamber gas inlet connected to the cell gas outlet and a second mixing chamber gas inlet, the mixing chamber mixing gas entering the chamber from the first and second mixing chamber gas inlets, and a mixing chamber gas outlet for discharging gas that has passed through the mixing chamber.
4. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 3, wherein the gas to be treated is divided into two portions, one portion being directed to the cell gas inlet to be treated in the cell and the other portion being directed to the second mixing chamber gas inlet.
5. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 3, wherein the gas to be treated is directed to the second mixing chamber gas inlet and atmospheric gas is directed to the cell gas inlet.
6. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 1, wherein the NTP generation cell comprises a plurality of NTP
generation cells arranged in parallel configuration.
generation cells arranged in parallel configuration.
7. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 6, wherein three NTP generation cells are arranged in parallel.
8. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 7, wherein each of the three NTP generation cells are powered by one phase of a three phase power source.
9. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 1, wherein the hot electrodes are hermetically sealed with a ceramic material.
10. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 9, wherein the ceramic material is a borosilicate glass.
11. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 10, wherein the borosilicate glass is in the form of sheets placed on opposite flat sides of the electrode and the edges of the glass sheets are sealed with an electrically insulating material.
12. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 11, wherein the electrically insulating material is a high voltage silicone sealant.
13. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 1, wherein the electrodes of the NTP generating cell are positioned in alternating relationship in a non-conductive rectangular frame.
14. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 13, wherein the hot electrodes each have a perimeter and are hermetically sealed by sealing material which extends beyond the perimeter of the hot electrode, the hot electrodes being held in the frame by the sealing material extending beyond the perimeter of the electrode so each hot electrode is held in the frame spaced from the frame.
15. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 14, wherein a NTP field is generated between electrodes when power is applied to the electrodes and the perimeter of the hot electrodes establishes a perimeter for the NTP field generated between electrodes substantially equal to the perimeter of the hot electrodes, whereby the NTP field is kept away from the frame.
16. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 15, wherein there is one more ground electrode than hot electrode.
17. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 1, wherein power is applied to the electrodes to generate a NTP field between the electrodes, and wherein the power is an AC voltage of between about 4,000 volts and about 100,000 volts at a frequency of between about 50 Hz and about 50,000 Hz.
18. Apparatus for treatment of odor and volatile organic compound contaminant in gas emissions according to Claim 1, additionally including a dialectic barrier discharge NTP generation cell power control system and an ozone sensor in the treated gas leaving the apparatus, the ozone sensor providing an indication of the ozone content of the treated gas, the ozone content of the treated gas being indicative of the extent of treatment of the gas, the indication of ozone content of the treated gas being transmitted to the control system to control the power provided to the cell.
19. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions, comprising:
a dielectric barrier discharge NTP generation cell having a gas flow path therethrough, said cell having a plurality of electrically hot electrodes and ground electrodes positioned in the gas flow path so that gas flowing in the gas flow path will flow across a portion of these electrodes;
a cell gas inlet leading to the gas flow path through the cell;
a cell gas outlet for discharging gas that has passed through the cell;
a gas mixing chamber having a first mixing chamber gas inlet connected to the cell gas outlet and a second mixing chamber gas inlet, the mixing chamber mixing gas entering the chamber from the first and second mixing chamber gas inlets; and a mixing chamber gas outlet for discharging gas that has passed through the mixing chamber, said inlets being arranged so that the cell gas inlet is selectively connected to a source of contaminated gas to be treated, to a source of atmospheric air, or to sources of both contaminated gas and atmospheric air.
a dielectric barrier discharge NTP generation cell having a gas flow path therethrough, said cell having a plurality of electrically hot electrodes and ground electrodes positioned in the gas flow path so that gas flowing in the gas flow path will flow across a portion of these electrodes;
a cell gas inlet leading to the gas flow path through the cell;
a cell gas outlet for discharging gas that has passed through the cell;
a gas mixing chamber having a first mixing chamber gas inlet connected to the cell gas outlet and a second mixing chamber gas inlet, the mixing chamber mixing gas entering the chamber from the first and second mixing chamber gas inlets; and a mixing chamber gas outlet for discharging gas that has passed through the mixing chamber, said inlets being arranged so that the cell gas inlet is selectively connected to a source of contaminated gas to be treated, to a source of atmospheric air, or to sources of both contaminated gas and atmospheric air.
20. A dielectric barrier discharge non-thermal plasma generation cell, comprising:
a plurality of electrically hot electrodes;
a plurality of ground electrodes;
a fluid flow path formed between said ground electrodes and said hot electrodes so that a fluid flowing in the fluid flow path will flow across a fluid flow portion of the electrodes;
dielectric material hermetically sealing each of the plurality of hot electrodes across the fluid flow portion of the electrodes;
a cell fluid inlet leading to the fluid flow path through the cell; and a cell fluid outlet for discharging fluid that has passed through the cell
a plurality of electrically hot electrodes;
a plurality of ground electrodes;
a fluid flow path formed between said ground electrodes and said hot electrodes so that a fluid flowing in the fluid flow path will flow across a fluid flow portion of the electrodes;
dielectric material hermetically sealing each of the plurality of hot electrodes across the fluid flow portion of the electrodes;
a cell fluid inlet leading to the fluid flow path through the cell; and a cell fluid outlet for discharging fluid that has passed through the cell
21. A dielectric barrier discharge non-thermal plasma generation cell according to Claim 20, wherein the electrodes of the non-thermal plasma generating cell are positioned in alternating relationship in a non-conductive rectangular frame.
22. A dielectric barrier discharge non-thermal plasma generation cell according to Claim 21, wherein the hot electrodes each have a perimeter and are hermetically sealed by sealing material which extends beyond the perimeter of the hot electrode, the hot electrodes being held in the frame by the sealing material extending beyond the perimeter of the electrode so each hot electrode is held in the frame spaced from the frame.
23. A dielectric barrier discharge non-thermal plasma generation cell according to Claim 22, wherein a non-thermal plasma field is generated between electrodes when power is applied to the electrodes and the perimeter of the hot electrodes establishes a perimeter for the non-thermal plasma field generated between electrodes substantially equal to the perimeter of the hot electrodes, whereby the non-thermal plasma field is kept away from the frame.
24. A dielectric barrier discharge non-thermal plasma generation cell according to Claim 23, wherein there is one more ground electrode than hot electrode.
25. Apparatus for treatment of odor and volatile organic compound contaminants in gas emissions according to Claim 20, wherein power is applied to the electrodes to generated a non-thermal plasma field between the electrodes, and wherein the power is an AC
voltage of between about 4,000 volts and about 100,000 volts at a frequency of between about 50 Hz and about 50,000 Hz.
voltage of between about 4,000 volts and about 100,000 volts at a frequency of between about 50 Hz and about 50,000 Hz.
26. A method of treating odor and volatile organic compound contaminants in gas emissions comprising:
passing a gas through a dielectric barrier discharge non-thermal plasma generation cell to create a range of reactive oxygen species in the gas which causes oxidation and/or reduction of odor causing molecules and volatile organic compounds; and mixing the gas to be treated with the gas having been passed through the dielectric barrier discharge non-thermal plasma generation cell to allow the reactive oxygen species to react with the odor causing molecules and volatile organic compounds in the gas to be treated.
passing a gas through a dielectric barrier discharge non-thermal plasma generation cell to create a range of reactive oxygen species in the gas which causes oxidation and/or reduction of odor causing molecules and volatile organic compounds; and mixing the gas to be treated with the gas having been passed through the dielectric barrier discharge non-thermal plasma generation cell to allow the reactive oxygen species to react with the odor causing molecules and volatile organic compounds in the gas to be treated.
27. A method of treating odor and volatile organic compound contaminants in gas emissions according to Claim 26, wherein the gas passed through the dielectric barrier discharge non-thermal plasma generation cell includes at least a portion of the gas to be treated.
28. A method of treating odor and volatile organic compound contaminants in gas emissions according to Claim 26, wherein the gas passed through the dielectric barrier discharge non-thermal plasma generation cell is atmospheric air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2502382A CA2502382C (en) | 2005-03-24 | 2005-03-24 | Apparatus and method for the treatment of odor and volatile organic compound contaminants in air emissions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2502382A CA2502382C (en) | 2005-03-24 | 2005-03-24 | Apparatus and method for the treatment of odor and volatile organic compound contaminants in air emissions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2502382A1 true CA2502382A1 (en) | 2006-09-24 |
| CA2502382C CA2502382C (en) | 2013-09-03 |
Family
ID=37055034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2502382A Active CA2502382C (en) | 2005-03-24 | 2005-03-24 | Apparatus and method for the treatment of odor and volatile organic compound contaminants in air emissions |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2502382C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008055337A1 (en) * | 2006-11-08 | 2008-05-15 | Air Phaser Environmental Ltd. | Apparatus and method for destroying organic compounds in commercial and industrial large volume air emissions |
| US10370606B2 (en) | 2013-10-10 | 2019-08-06 | Plasco Conversion Technologies Inc. | Non-equilibrium plasma-assisted method and system for reformulating and/or reducing tar concentration in gasification derived gas product |
| IT202000014299A1 (en) * | 2020-06-16 | 2021-12-16 | A B Esse S P A | EQUIPMENT FOR THE CONTROLLED AND AUTOMATED SANITIZATION OF ENVIRONMENTS |
-
2005
- 2005-03-24 CA CA2502382A patent/CA2502382C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008055337A1 (en) * | 2006-11-08 | 2008-05-15 | Air Phaser Environmental Ltd. | Apparatus and method for destroying organic compounds in commercial and industrial large volume air emissions |
| US10370606B2 (en) | 2013-10-10 | 2019-08-06 | Plasco Conversion Technologies Inc. | Non-equilibrium plasma-assisted method and system for reformulating and/or reducing tar concentration in gasification derived gas product |
| IT202000014299A1 (en) * | 2020-06-16 | 2021-12-16 | A B Esse S P A | EQUIPMENT FOR THE CONTROLLED AND AUTOMATED SANITIZATION OF ENVIRONMENTS |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2502382C (en) | 2013-09-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |