US4780287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decomposition of volatile organic halogenated compounds contained in gases
Assignee: US Filter Zimpro Inc
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Filing: 1986-10-22
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Granted: 1988-10-25
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Expires: 2006-10-22
Abstract
Abstract The invention is a method and apparatus for rate enhanced decomposition of volatile organic halogenated compounds. In the invention a stream of gas carrying these volatile organic halogenated compounds is passed through a porous bed of silica gel, preferably, or alternatively through quartz chips, and the bed is thereafter irradiated with ultraviolet light. If, after prolonged use the rate of decomposition declines, the decomposing activity can be fully restored by heating and/or passing nitrogen gas through the bed of silica gel. It has further been discovered that elevating the temperature of a solution of organic halogenated compounds, organic acids, or aryl alcohols, increases the oxidation rate of these compounds wherein irradiation of solution with ultraviolet light and addition of ozone to solution perform the oxidation. It has also been discovered that elevating the temperature of a solution of short chain alcohols, aryl alcohols, organic acids or aldehydes in solution, wherein addition of H 2 O 2 to solution and irradiation of solution with ultraviolet light act as oxidizing agents, increases the oxidation rate of these compounds. Furthermore, it has been shown that the rate of decomposition of a solution of organic halogens, wherein ozone is added to the solution and the solution is irradiated with ultraviolet light to perform the decomposition, is increased by using an appreciable component of 185 nano-m energy.
Inventors
- 👤 Jack D. Zeff
- 👤 Eriks Leitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:55
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/123; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/68; B01D53/70; B01D53/72
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
104 words
An apparatus for decomposing volatile organic halogenated compounds contained in gases comprising: (a) a housing having a gas supply port, a gas exhaust port, and a gas flow path between said gas supply port and said gas exhaust port; (b) a porous, adsorbent bed located in said gas flow path, wherein said porous, adsorbent bed is capable of adsorbing volatile organic halogenated compounds from the gaseous state; and (c) means for irradiating said porous, adsorbent bed with ultraviolet light, said porous, adsorbent bed surrounding and said irradiating means at a distanct effective to promote recuction of said halogenated volatile organic compounds in said gases.
Claim 2
Independent Claim
104 words
An apparatus for decomposing volatile organic halogenated compounds contained in gases comprising: (a) a housing having a gas supply port, a gas exhaust port, and a gas flow path between said gas supply port and said gas exhaust port; (b) a porous, adsorbent bed located in said gas flow path, wherein said porous, adsorbent bed is capable of adsorbing volatile organic halogenated compounds from the gaseous state; and (c) means for irradiating said porous, adsorbent bed with ultraviolet light, said porous, adsorbent bed surrounding and said irradiating means at a distanct effective to promote recuction of said halogenated volatile organic compounds in said gases.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1 wherein said means for irradiating is at least one ultraviolet lamp.
Claim 4
Dependent Claim
31 words
The apparatus of claim 1 wherein said means for irradiating irradiates said porous, adsorbent bed with ultraviolet light containing a substantial portion of light having a wavelength of about 185 nanometers.
Claim 5
Dependent Claim
20 words
The apparatus of claim 1 wherein said porous adsorbent bed is a 6 to 16 mesh bed of silica gel.
Claim 6
Dependent Claim
28 words
The apparatus of claim 1 wherein said means for irradiating irradiates said porous adsorbent bed with ultraviolet light containing wavelengths from about 185 nanometers to about 254 nanometers.
Claim 7
Dependent Claim
24 words
The apparatus of claim 1 wherein said porous adsorbent bed comprises a material selected from the group consisting of quartz chips and silica gel.
Claim 8
Independent Claim
211 words
An apparatus for decomposing organic compounds contained in solution, comprising: (d) a reactor tank for simultaneously exposing a contaminated solution to ultraviolet light and ozone to oxidize organic compounds in the solution and to volatize organic compounds from the solution, said reactor tank having at least one influent port for incoming solution and at least one effluent port for outgoing solution, and said reactor tank having at least one gas diffuser tube proximal to the influent port for introducing ozone into the contaminated solution in the tank, and said reactor tank containing ultraviolet irradiation means; (e) ozone generator means coupled to at least one gas diffuser tube for generating ozone from air to produce an ozone-air mixture, and for introducing the ozone-air mixture into said reactor tank for reaction with the contaminated solution; and (f) a detoxification unit coupled to the reactor tank for decomposing volatized organic compounds removed from the contaminated solution in the reactor tank said detoxification unit having a plurality of irradiating means for irradiating the volatized organic compounds, said irradiating means enclosed in quartz sheaths in said detoxification unit; and having a porous adsorbent bed for adsorbing ozone and organic compounds arranged such that said porous, adsorbent bed is surrounding and in contact with said quartz sheaths.
Claim 9
Independent Claim
211 words
An apparatus for decomposing organic compounds contained in solution, comprising: (d) a reactor tank for simultaneously exposing a contaminated solution to ultraviolet light and ozone to oxidize organic compounds in the solution and to volatize organic compounds from the solution, said reactor tank having at least one influent port for incoming solution and at least one effluent port for outgoing solution, and said reactor tank having at least one gas diffuser tube proximal to the influent port for introducing ozone into the contaminated solution in the tank, and said reactor tank containing ultraviolet irradiation means; (e) ozone generator means coupled to at least one gas diffuser tube for generating ozone from air to produce an ozone-air mixture, and for introducing the ozone-air mixture into said reactor tank for reaction with the contaminated solution; and (f) a detoxification unit coupled to the reactor tank for decomposing volatized organic compounds removed from the contaminated solution in the reactor tank said detoxification unit having a plurality of irradiating means for irradiating the volatized organic compounds, said irradiating means enclosed in quartz sheaths in said detoxification unit; and having a porous adsorbent bed for adsorbing ozone and organic compounds arranged such that said porous, adsorbent bed is surrounding and in contact with said quartz sheaths.
Claim 10
Dependent Claim
78 words
The apparatus of claim 7 wherein said reactor tank further comprises a plurality of chambers formed by a plurality of longitudinal baffles to facilitate flow of the influent solution in the chambers from the influent port to the effluent port of the reactor tank, said baffles disposed parallel to each other and having a length which is less than the width of the reactor tank to allow passage of the solution between the channels formed by said baffles.
Claim 11
Dependent Claim
27 words
The apparatus of claim 8 wherein the gas diffuser tube is located at the base of a chamber proximal to the influent port of the reactor tank.
Claim 12
Dependent Claim
34 words
The apparatus of claim 8 wherein said irradiation means comprise a plurality of ultraviolet lamps, said lamps placed vertically in the chambers of the reactor tank relative to the longitudinal placement of the baffles.
Claim 13
Dependent Claim
23 words
The apparatus of claim 10 wherein said ultraviolet lamps irradiate with light containing wavelengths of from about 185 nanometers to about 254 nanometers.
Claim 14
Dependent Claim
13 words
The apparatus of claim 7 wherein said porous adsorbent bed comprises silica gel.
Claim 15
Dependent Claim
113 words
The apparatus of claim 7 further comprising a degasser for removing residual ozone from the air mixture after treatment in the detoxification unit and from the effluent solution after treatment in the reactor tank, said degasser having a first inlet coupled to the reactor tank for entry of effluent solution from the reactor tank, a second inlet coupled to said detoxification unit for entry of air from said detoxification unit, irradiating means for irradiating the effluent solution and the air mixture in said degasser, and said degasser having a first outlet port coupled to said ozone generating means for returning air from which residual ozone has been removed to said ozone generating means.
Claim 16
Dependent Claim
19 words
The apparatus of claim 13 wherein said irradiating means in said degasser comprise ultraviolet lamps enclosed in quartz sheaths.
Claim 17
Dependent Claim
12 words
The apparatus of claim 14 including six illuminating means in said degasser.
Claim 18
Dependent Claim
21 words
The apparatus of claim 13 further comprising a vent for receiving external air to replace air lost in the reactor tank.
Claim 19
Dependent Claim
23 words
The apparatus of claim 13 further comprising a level gauge coupled to the degasser for detecting the level of solution in the degasser.
Claim 20
Dependent Claim
30 words
The apparatus of claim 13 wherein said degasser further comprises a second outlet port coupled to the reactor tank for returning effluent solution to the reactor tank for further treatment.
Claim 21
Dependent Claim
25 words
The apparatus of claim 18 further comprising pump means coupled to said degasser for moving the effluent solution from the degasser to the reactor tank.
Claim 22
Dependent Claim
22 words
The apparatus of claim 7 further comprising at least one compressor for pressurizing and moving air from the environment through the apparatus.
Claim 23
Dependent Claim
23 words
The apparatus of claim 20 further comprising a drier coupled to the compressor for reducing the moisture content of air entering the compressor.
Claim 24
Dependent Claim
34 words
The apparatus of claim 21 further comprising a second compressor coupled to the detoxification unit for moving the air mixture containing ozone and volatized organic compounds from the reactor tank to the detoxification unit.
Claim 25
Dependent Claim
17 words
The apparatus of claim 7 wherein said detoxification unit includes means for heating said porous, adsorbent bed.
Claim 26
Dependent Claim
87 words
A detoxification unit for decomposing volatile organic compounds contained in gases comprising: (a) a housing having a gas supply port, a gas exhaust port and a gas flow path between said gas supply port and said gas exhaust port: (b) a plurality of irradiating means for irradiating a contaminated gas in said housing; (c) quartz sheaths surrounding said irradiating means; and (d) a porous, adsorbent bed for adsorbing ozone and organic compounds present in the contaminated gas, said bed surrounding and in contact with said quartz sheaths.
Claim 27
Dependent Claim
87 words
A detoxification unit for decomposing volatile organic compounds contained in gases comprising: (a) a housing having a gas supply port, a gas exhaust port and a gas flow path between said gas supply port and said gas exhaust port: (b) a plurality of irradiating means for irradiating a contaminated gas in said housing; (c) quartz sheaths surrounding said irradiating means; and (d) a porous, adsorbent bed for adsorbing ozone and organic compounds present in the contaminated gas, said bed surrounding and in contact with said quartz sheaths.
Claim 28
Dependent Claim
14 words
The detoxification unit of claim 24 wherein said porous, adsorbent bed comprises silica gel.
Claim 29
Dependent Claim
23 words
The apparatus of claim 25 wherein said irradiating means irradiate with light containing wavelengths of from about 185 nanometers to about 254 nanometers.
Claim 30
Independent Claim
226 words
An apparatus for decomposing volatile and non-volatile organic compounds contained in a solution comprising: (a) a reactor tank for decomposing organic compounds present in a contaminated solution, having a first compartment and a second compartment, said first compartment for volatizing and oxidizing organic compounds in the solution and having an influent port, means for heating said contaminated solution, and means coupling said first compartment to said second compartment for moving partially detoxified solution from said first compartment into said second compartment, said second compartment for decomposing non-volatile organic compounds in the solution and having an effluent port, at least one gas diffuser, a first exit port for passage of ozone from the top of the second compartment and a second exit port for exit of treated solution from the second compartment; (b) ozone generating means for generating ozone and coupled to said gas diffuser in said second compartment; (c) an ozone decomposer coupled to said first exit port in said second compartment of said reactor tank for producing oxygen from ozone for release from the apparatus into the environment; and (d) a detoxification unit coupled to the first compartment of said reactor tank for decomposing volatized organic compounds removed from the contaminated solution in the first compartment of the reactor tank, said detoxification unit having a plurality of irradiating means for irradiating the volatized organic compounds.
Claim 31
Independent Claim
226 words
An apparatus for decomposing volatile and non-volatile organic compounds contained in a solution comprising: (a) a reactor tank for decomposing organic compounds present in a contaminated solution, having a first compartment and a second compartment, said first compartment for volatizing and oxidizing organic compounds in the solution and having an influent port, means for heating said contaminated solution, and means coupling said first compartment to said second compartment for moving partially detoxified solution from said first compartment into said second compartment, said second compartment for decomposing non-volatile organic compounds in the solution and having an effluent port, at least one gas diffuser, a first exit port for passage of ozone from the top of the second compartment and a second exit port for exit of treated solution from the second compartment; (b) ozone generating means for generating ozone and coupled to said gas diffuser in said second compartment; (c) an ozone decomposer coupled to said first exit port in said second compartment of said reactor tank for producing oxygen from ozone for release from the apparatus into the environment; and (d) a detoxification unit coupled to the first compartment of said reactor tank for decomposing volatized organic compounds removed from the contaminated solution in the first compartment of the reactor tank, said detoxification unit having a plurality of irradiating means for irradiating the volatized organic compounds.
Claim 32
Dependent Claim
41 words
The apparatus of claim 27 further comprising means coupling the top of said detoxification unit to at least one gas diffuser located in the bottom of said first compartment for moving detoxified air from the detoxification unit into said first compartment.
Claim 33
Dependent Claim
18 words
The apparatus of claim 27 wherein said irradiating means in the detoxification unit are enclosed in quartz sheaths.
Claim 34
Dependent Claim
19 words
The apparatus of claim 29 further comprising a porous, adsorbent bed surrounding and in contact with said quartz sheaths.
Claim 35
Dependent Claim
13 words
The apparatus of claim 30 wherein the porous, adsorbent bed comprises silica gel.
Claim 36
Dependent Claim
27 words
The apparatus of claim 31 wherein said irradiating means are ultraviolet lamps irradiating light containing a substantial portion of light having a wavelength of aproximately 185 nanometers.
Claim 37
Dependent Claim
31 words
The apparatus of claim 27 wherein the apparatus further comprises means for introducing an oxidizing solution into the reactor tank, for catalyzing the oxidation of compounds present in the contaminated solution.
Claim 38
Dependent Claim
26 words
The apparatus of claim 33 further comprising a heater coupled to the reactor tank for preheating the influent solution prior to entry into the reactor tank.
Claim 39
Dependent Claim
28 words
The apparatus of claim 27 further comprising means for returning treated, effluent solution from the second compartment of the reactor tank to the first compartment for further treatment.
Claim 40
Dependent Claim
49 words
The apparatus of claim 35 having a heat exchanger coupled to the means for returning effluent solution, prior to entry of solution into the first compartment of the reactor tank, for transferring heat from the effluent solution exiting the reactor tank to the influent solution entering the reactor tank.
Claim 41
Dependent Claim
28 words
The apparatus of claim 27 further comprising a level gauge in the first compartment of the reactor tank for indicating the level of solution in the first compartment.
Claim 42
Dependent Claim
29 words
The apparatus of claim 27 further comprising a level gauge located in the second compartment of the reaction tank for indicating the level of solution in the second compartment.
References Cited (Backward Citations)
US1969655A
Cited
US3067115A
Cited
SU142637A1
Cited
US3657087A
Cited
US3745750A
Cited
US3772425A
Cited
US3924139A
Cited
US3977952A
Cited
US3980755A
Cited
US4045316A
Cited
US4045538A
Cited
US4210503A
Cited
US4118191A
Cited
US4039623A
Cited
US4179616A
Cited
US4144152A
Cited
DE2817772A1
Cited
JPS57183306A
Cited
US4345983A
Cited
JPS59150589A
Cited
JPS60114393A
Cited
JPS6128445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |