US3860402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption optimization
Assignee: Babcock and Wilcox Co
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Filing: 1973-03-22
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Granted: 1975-01-14
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Expires: 1993-03-22
Abstract
Abstract An apparatus which limits the movement of spheres of a fluidized bed to a linearly defined vertical path having hardly any horizontal breadth in a free flow area above such bed which is equivalent to between 3.5 and 5.0 times the diameter of the spheres for the optimization of the process of absorption. In other embodiments, the spheres of the bed are arranged in overall patterns according to their individual weight. A process of maintaining improved overall absorption efficiencies in a tower of the spray variety by maintaining a constant holdup of liquid to gas flow ratio in the contact zone over a wide range of gas loads through the use of the aforesaid apparatus.
Inventors
- 👤 Steven S Strom
- 👤 Henry P Markant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:23
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/163; B01D53/00; B01D53/14; B01D53/18; B01J; B01J19/00; B01J19/30; B01J19/305; B01J2219/00; B01J2219/30; B01J2219/302; B01J2219/30207; F; F23; F23J; F23J2215/00; F23J2215/20; F23J2219/00; F23J2219/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
217 words
IN THE PROCESS OF ABSORPTION BETWEEN A LIQUID AND A GAS WHEREIN A CONTACT ZONE IS PROVIDED FOR FLOW OF LIQUID DOWNWARDLY AND GAS UPWARDLY THERETHROUGH , THE LOWER END PORTION OF THE CONTACT ZONE BEING RESTRICTED FLOW WISE BY A PLURALITY OF SPACED OPENINGS, A PLURALITY OF SPHERES CORRESPONDING IN NUMBER WITH AND HAVING A DIMENSION GREATER THAN THE SPACED OPENINGS, EACH OF THE SPHERES BEING SUBSTANTIALLY OF THE SAME DIMENSIONS AND HAVING SELECTED DIFFERENT WEIGHTS, AND EACH SPHERE BEING LIMITED IN VERTICAL MOVEMENT BY A PLURALITY OF VERTICAL RODS FORMING A DEFINED LINEAL PATH SEVERAL TIMES THE DIAMETER OF THE SHPERE AND HAVING HARDLY ANY HORIZANTAL BREADTH, THE IMPROVED METHOD OF OPERATION COMPRISING MAINTAINING A SUBSTANTIALLY UNIFORM FLOW OF LIQUID DOWNWARDLY INTO SAID CONTACT ZONE, AND REGUALTING THE UPWARD FLOW OF GAS INTO SAID CONTACT ZONE BETWEEN A MAXIMUM FLOW RATE FLUIDIZING ALL OF SAID SPHERES IN THE CONTACT ZONE WITH ALL OF THE SPACED OPENINGS BEING OPEN FOR A GAS AND LIQUID FLOW THERETHROUGH AND AT A MINIMUM FLOW RATE FLUIDIZING ONLY THE LIGHTEST WEIGHT SPHERES WITH ONLY THE SPACED OPENINGS CORRESPONDING WITH THE LIGHT WEIGHT SPHERES BEING OPEN FOR FLOW THERETHROUGH WHEREBY A SUBSTANTIALLY CONSTANT HOLDUP OF LIQUID IS ATTAINED IN THE CONTACT ZONE FOR OPTIMUM ABSORPTION EFFICIENCY DURING LIQUID AND GAS CONTACT.
Claim 2
Dependent Claim
217 words
IN THE PROCESS OF ABSORPTION BETWEEN A LIQUID AND A GAS WHEREIN A CONTACT ZONE IS PROVIDED FOR FLOW OF LIQUID DOWNWARDLY AND GAS UPWARDLY THERETHROUGH , THE LOWER END PORTION OF THE CONTACT ZONE BEING RESTRICTED FLOW WISE BY A PLURALITY OF SPACED OPENINGS, A PLURALITY OF SPHERES CORRESPONDING IN NUMBER WITH AND HAVING A DIMENSION GREATER THAN THE SPACED OPENINGS, EACH OF THE SPHERES BEING SUBSTANTIALLY OF THE SAME DIMENSIONS AND HAVING SELECTED DIFFERENT WEIGHTS, AND EACH SPHERE BEING LIMITED IN VERTICAL MOVEMENT BY A PLURALITY OF VERTICAL RODS FORMING A DEFINED LINEAL PATH SEVERAL TIMES THE DIAMETER OF THE SHPERE AND HAVING HARDLY ANY HORIZANTAL BREADTH, THE IMPROVED METHOD OF OPERATION COMPRISING MAINTAINING A SUBSTANTIALLY UNIFORM FLOW OF LIQUID DOWNWARDLY INTO SAID CONTACT ZONE, AND REGUALTING THE UPWARD FLOW OF GAS INTO SAID CONTACT ZONE BETWEEN A MAXIMUM FLOW RATE FLUIDIZING ALL OF SAID SPHERES IN THE CONTACT ZONE WITH ALL OF THE SPACED OPENINGS BEING OPEN FOR A GAS AND LIQUID FLOW THERETHROUGH AND AT A MINIMUM FLOW RATE FLUIDIZING ONLY THE LIGHTEST WEIGHT SPHERES WITH ONLY THE SPACED OPENINGS CORRESPONDING WITH THE LIGHT WEIGHT SPHERES BEING OPEN FOR FLOW THERETHROUGH WHEREBY A SUBSTANTIALLY CONSTANT HOLDUP OF LIQUID IS ATTAINED IN THE CONTACT ZONE FOR OPTIMUM ABSORPTION EFFICIENCY DURING LIQUID AND GAS CONTACT.
Claim 3
Dependent Claim
28 words
In the process of claim 1 wherein the apparent density of each sphere is in the range of 0.15 and 0.31 pounds per square foot of spherical surface.
Claim 4
Dependent Claim
13 words
In the process of claim 2 wherein the spheres are hollow and perforated.
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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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |