US4612405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous sorption process
Assignee: Coal Industry Patents Ltd
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Filing: 1985-05-23
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Granted: 1986-09-16
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Expires: 2005-05-23
Abstract
Abstract A process providing continuous or quasi-continuous sorption uses at least three fixed bed sorbent zones connectable in series by pipes, for the passage of a liquid phase containing a component to be sorbed. The approach of saturation of one or more of the zones is detected, e.g., using temperature sensors, and regeneration of the saturated zone or zones is initiated using hot gas. Compared to conventional sorption processes, energy savings, especially as regards energy consumed in blowing the hot gas through the fixed bed zone, are obtainable.
Inventors
- 👤 David J. A. McCaffrey
- 👤 Percy E. Rogers
- 👤 James Carlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:19
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A quasi-continuous or continuous sorption process requiring a hot gas regeneration step, comprising passing a liquid phase containing a component to be sorbed through at least three fixed bed sorption zones connected in series, detecting the approach of saturation of all of said zones, stopping the flow of liquid through the zones upon detection of the approach of saturation of the final zone, and initiating regeneration using hot gas through said zones upon said detection, all said zones being regenerated in parallel.
Claim 2
Dependent Claim
82 words
A quasi-continuous or continuous sorption process requiring a hot gas regeneration step, comprising passing a liquid phase containing a component to be sorbed through at least three fixed bed sorption zones connected in series, detecting the approach of saturation of all of said zones, stopping the flow of liquid through the zones upon detection of the approach of saturation of the final zone, and initiating regeneration using hot gas through said zones upon said detection, all said zones being regenerated in parallel.
Claim 3
Dependent Claim
17 words
The process according to claim 1, wherein a train of four or five absorption zones are used.
Claim 4
Dependent Claim
16 words
The process according to claim 1, wherein said liquid phase comprises water and an organic solvent.
Claim 5
Dependent Claim
13 words
The process according to claim 3, wherein said organic solvent is an alcohol.
Claim 6
Dependent Claim
24 words
The process according to claim 1, wherein the approach of saturation of a sorption zone is detected by monitoring the temperature of the zone.
Claim 7
Dependent Claim
91 words
A quasi-continuous or continuous sorption process using five fixed bed sorption zones requiring a hot gas regeneration step, comprising continuously passing a liquid phase containing a component to be sorbed through three of said five fixed bed sorption zones connected in series while initiating regeneration of the remaining two saturated zones by passing hot gas through said remaining two zones, said hot gas flowing through said zones in parallel and detecting the approach of saturation of at least one of said zones through which the liquid phase is passing for regeneration.
Claim 8
Dependent Claim
91 words
A quasi-continuous or continuous sorption process using five fixed bed sorption zones requiring a hot gas regeneration step, comprising continuously passing a liquid phase containing a component to be sorbed through three of said five fixed bed sorption zones connected in series while initiating regeneration of the remaining two saturated zones by passing hot gas through said remaining two zones, said hot gas flowing through said zones in parallel and detecting the approach of saturation of at least one of said zones through which the liquid phase is passing for regeneration.
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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |