Patent US4207276A successfully refreshed from Google Patents.
US4207276A
Expired / Lapsed
US
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Easily maintained bubble-cap column for the distillation of clogging and high-sediment liquids
Assignee: Alko Oy AB
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Filing: 1978-10-04
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Granted: 1980-06-10
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Expires: 1998-10-04
Abstract
Abstract A bubble-cap column for the distillation of high-sediment or clogging liquids is disclosed, in which the bubble-cap structures comprising a bubble-cap and a neck are detachable and removable from the column and lined with polytetrafluoroethylene.
Inventors
- 👤 Pentti P. Ronkainen
- 👤 Olavi A. Leppanen
- 👤 Kyosti T. Vento
- 👤 Heimo K. Pesonen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:42
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18; B01D3/20; B01D3/205; Y; Y10; Y10S; Y10S203/00; Y10S203/23
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
104 words
In a bubble-cap column for the distillation of high sediment or clogging liquids including a plurality of apertured plates arranged in spaced vertical relationship, each plate having a plurality of bubble-cap structures arranged in rows thereon and each comprising a bubble-cap overlying a neck portion extending through an aperture in said plate, the improvement wherein said bubble-cap structure are readily detachable from said plates and are removable through hatches provided in said column, the inner surfaces of said bubble-cap and said inner and outer surfaces of said neck portion being coated with an organic fluorine compound to which agglomerating sediments do not readily adhere.
Claim 2
Dependent Claim
104 words
In a bubble-cap column for the distillation of high sediment or clogging liquids including a plurality of apertured plates arranged in spaced vertical relationship, each plate having a plurality of bubble-cap structures arranged in rows thereon and each comprising a bubble-cap overlying a neck portion extending through an aperture in said plate, the improvement wherein said bubble-cap structure are readily detachable from said plates and are removable through hatches provided in said column, the inner surfaces of said bubble-cap and said inner and outer surfaces of said neck portion being coated with an organic fluorine compound to which agglomerating sediments do not readily adhere.
Claim 3
Dependent Claim
29 words
A bubble-cap column according to claim 1 in which said bubble-caps in each row are mounted on an elongate carrier for cojoint removal of said bubble-caps from said column.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |