Patent US4452700A successfully refreshed from Google Patents.
US4452700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the performance and control of chemical resp. bio-chemical reactions
Assignee: Individual
•
Filing: 1980-03-31
•
Granted: 1984-06-05
•
Expires: 2000-03-31
Abstract
Abstract The invention provides a process for the performance and control of chemical or biochemical process cycles in two or a plurality of series-connected reaction stages or basins, with which gassing of a fluid is controllable. The process provides for a recirculation of the fluid between reaction stages or basins in that the basins are preferably arranged concentrically to one another, can be charged selectively, and have at least one connection between one another through which the fluid passes so that the contents of the basins are caused to assume a horizontal rotational flow. Recirculation of the fluid is provided by overflow dams, wall openings, or other devices.
Inventors
- 👤 Norbert Schneider
- 👤 Jakob H. J. M. van der Graaf
- 👤 Jurgen Zink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:10
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1236; C02F3/1257; C02F3/006; C02F3/30; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/926
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
184 words
A process for the performance and control of chemical or biochemical process cycles in at least two series connected reactions stages comprising introducing a liquid flow into a first reaction stage wherein said liquid is brought into substantially horizontally oriented flow by current generating means, said liquid being subjected to controlled gassing by aerator means disposed at the bottom of said first reaction stage; passing a portion of said liquid in said first reaction stage into a second reaction stage, said first and second reaction stage separated by partition means extending throughout the length of said first and second reaction stages and being provided with a continuous passage opening whereby said liquid flows from said first to said second reaction stages, said second reaction stage being characterized by horizontal circulating liquid wherein controlled gassing of said liquid occurs by aerator means disposed at the bottom of said second reaction stage; and recycling a portion of said liquid in said second reaction stage back into said first reaction stage by means of a second continuous passage opening extending throughout the length of said partition means.
Claim 2
Dependent Claim
184 words
A process for the performance and control of chemical or biochemical process cycles in at least two series connected reactions stages comprising introducing a liquid flow into a first reaction stage wherein said liquid is brought into substantially horizontally oriented flow by current generating means, said liquid being subjected to controlled gassing by aerator means disposed at the bottom of said first reaction stage; passing a portion of said liquid in said first reaction stage into a second reaction stage, said first and second reaction stage separated by partition means extending throughout the length of said first and second reaction stages and being provided with a continuous passage opening whereby said liquid flows from said first to said second reaction stages, said second reaction stage being characterized by horizontal circulating liquid wherein controlled gassing of said liquid occurs by aerator means disposed at the bottom of said second reaction stage; and recycling a portion of said liquid in said second reaction stage back into said first reaction stage by means of a second continuous passage opening extending throughout the length of said partition means.
Claim 3
Dependent Claim
27 words
A process in accordance with claim 1, wherein said continuous passage openings in said partition means are provided by a gap forming displacement in said partition means.
Claim 4
Dependent Claim
43 words
A process in accordance with claim 2, wherein said gap forming displacement is provided by the concentric arrangement of said first and second reaction stages separated by said partition means, said partition means provided by a pair of semicircular partitions of unequal radius.
Claim 5
Dependent Claim
16 words
A process in accordance with claim 1, wherein said continuous passage openings are controlled by weirs.
Claim 6
Dependent Claim
16 words
A process in accordance with claim 1, wherein said continuous passage openings are controlled by valves.
Claim 7
Dependent Claim
16 words
A process in accordance with claim 1, wherein said continuous passage openings are controlled by deflectors.
Claim 8
Dependent Claim
15 words
A process in accordance with claim 1, wherein horizontal flow is effected by tubular propellers.
Claim 9
Dependent Claim
14 words
A process in accordance with claim 1, wherein horizontal flow is effected by paddles.
Claim 10
Dependent Claim
16 words
A process in accordance with claim 1, wherein no gassing occurs in said first reaction stage.
Claim 11
Dependent Claim
16 words
A process in accordance with claim 1, wherein gassing in said first reaction stages is intermittent.
Claim 12
Dependent Claim
42 words
A process in accordance with claim 1, wherein gassing is adjusted so that the oxygen concentration is between 0 and 0.5 milligrams per liter is said first reaction stage and between 0.5 and 3 milligrams per liter in said second reaction stage.
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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |