Patent US3993911A successfully refreshed from Google Patents.
US3993911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photochemical reactor
Assignee: Individual
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Filing: 1974-02-05
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Granted: 1976-11-23
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Expires: 1994-02-05
Abstract
Abstract What follows is a description of an improved photochemical reactor which includes a reaction vessel, a UV-radiation source, and a structure defining an intermediate space between the reaction vessel and the radiation source. The reaction vessel is transparent to radiation and receives the substances to be irradiated. Within the intermediate space a luminescent material is disposed which transforms the UV-light of the radiation souce into a specific wavelength characteristic of the luminescent material and which effects the photochemical reactions of the substances within the reaction vessel.
Inventors
- 👤 Alfred Graentzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:22
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/123
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
79 words
In a photochemical reactor including a reaction vessel which is transparent to radiation and which receives the substances to be irradiated, a UV-radiation source, and luminescent material which transforms the UV-light of the radiation source into a specific wavelength characteristic of the luminescent material and which effects the photochemical reactions of the substances, the improvement comprising means defining an intermediate space between the reaction vessel and the radiation source, wherein the luminescent material is disposed within said intermediate space.
Claim 2
Dependent Claim
79 words
In a photochemical reactor including a reaction vessel which is transparent to radiation and which receives the substances to be irradiated, a UV-radiation source, and luminescent material which transforms the UV-light of the radiation source into a specific wavelength characteristic of the luminescent material and which effects the photochemical reactions of the substances, the improvement comprising means defining an intermediate space between the reaction vessel and the radiation source, wherein the luminescent material is disposed within said intermediate space.
Claim 3
Dependent Claim
14 words
The photochemical reactor as defined in claim 1, wherein said intermediate space is evacuated.
Claim 4
Dependent Claim
18 words
The photochemical reactor as defined in claim 1, wherein said intermediate space is filled with a protective gas.
Claim 5
Dependent Claim
22 words
The photochemical reactor as defined in claim 1, wherein said luminescent material is applied to the outer surface of the reaction vessel.
Claim 6
Dependent Claim
61 words
The photochemical reactor as defined in claim 1, wherein the radiation source is disposed centrally within the reactor and is enclosed by an annular space defined by the reaction vessel and said intermediate space defining means and within which the substances to be irradiated are contained, and wherein the intermediate space is located between the radiation source and said annular space.
Claim 7
Dependent Claim
43 words
The photochemical reactor as defined in claim 1, wherein said means defining the intermediate space is formed by two concentric quartz tubes sealed together at their face ends and held at a distance from one another, said quartz tubes surrounding the reaction vessel.
Claim 8
Dependent Claim
30 words
The photochemical reactor as defined in claim 1, wherein said means comprises an envelope made of UV-light transparent material, said envelope enclosing the reaction vessel to define said intermediate space.
Claim 9
Dependent Claim
29 words
The photochemical reactor as defined in claim 7, wherein said reaction vessel is made of a filtered quartz opaque to UV-light and said envelope is made of pure quartz.
Claim 10
Dependent Claim
24 words
The photochemical reactor as defined in claim 4, wherein the reaction vessel is made of glass and said envelope is made of pure quartz.
Claim 11
Dependent Claim
32 words
The photochemical reactor as defined in claim 9, further comprising means for deep cooling of the substances, and wherein said luminescent material is applied to the inner wall of said quartz envelope.
Claim 12
Dependent Claim
22 words
The photochemical reactor as defined in claim 9, wherein the reaction vessel and said quartz envelope are demountably connected with one another.
Claim 13
Dependent Claim
22 words
The photochemical reactor as defined in claim 9, wherein said quartz envelope and the radiation source define a cooling gap between them.
Claim 14
Dependent Claim
55 words
The photochemical reactor as defined in claim 1, further comprising a plurality of displacement body means of differing sizes, said body means being insertable within the reaction vessel and defining therewith a plurality of annular spaces in the region of irradiation, said annular spaces having differing volumes through which the substances to be irradiated flow.
Claim 15
Dependent Claim
26 words
The photochemical reactor as defined in claim 13, wherein one of said displacement body means serves as a cooler means through which a coolant medium flows.
Claim 16
Dependent Claim
58 words
The photochemical reactor as defined in claim 13, further comprising a magnetic stirrer, wherein said displacement body means define an annular space about a central axis, at one end of which said magnetic stirrer is located to be externally driven, and a central return line which communicates with said annular space on both sides of said central axis.
Claim 17
Dependent Claim
52 words
The photochemical reactor as defined in claim 13, further comprising a gas permeable sintering material, wherein said displacement body means is fabricated as a thick-walled tube into which a driving or rinsing line is formed which is sealed at one end from the substances in the reaction vessel by said sintering material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |