Patent US4622467A successfully refreshed from Google Patents.
Patent US3867416A successfully refreshed from Google Patents.
US3867416A
Expired / Lapsed
US
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Continuous process for drying and extracting oils from solid materials
Assignee: French Oil Mill Machinery Co
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Filing: 1969-12-31
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Granted: 1975-02-18
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Expires: 1989-12-31
Abstract
Abstract A continuous drying and oil extraction process and apparatus wherein counterflow is established between successive vertical beds of stratified oil bearing particles in an extractor and ascending vapor solvent which passes upwardly through the beds agitating the particles therein to produce successive fluidized bed conditions, the vapor carrying liquids upwardly therewith to the top of the extractor.
Inventors
- 👤 Roy W Barns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:17
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10; C11B1/102; Y; Y10; Y10S; Y10S159/00; Y10S159/03
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
145 words
A CONTINUOUS DEHYDRATION AND OIL EXTRACTION PROCESS, COMPRISING THE STEPS OF: A. SUPPLYING FINELY-DIVIDED OIL-BEARING SOLID PARTICULATE MATERIAL INTO THE TOP OF AN EXTRACTOR COLUMN HAVING A PLURALITY OF SUCCESSIVE, VERTICALLY SPACED PLATES SEVERALLY PROVIDED WITH A PLURALITY OF OPENINGS THERETHROUGH, SAID PLATES SUPPORTING SAID MATERIAL IN A SERIES OF VERTICALLY SPACES BEDS, B. INTRODUCING EXTRACTION SOLVENT VAPOR INTO THE BOTTOM OF SAID EXTRACTOR COLUMN TO PASS UPWARDLY THROUGH SAID OPENINGS AND BEDS TO ACT UPON SAID MATERIAL AND TO PASS OUT OF THE TOP OF SAID EXTRACTOR COLUMN, AND C. CONTROLLING SUCH INTRODUCTION OF SAID EXTRACTION SOLVENT VAPOR SO THAT THE VELOCITY OF SAME RISING THROUGH SAID EXTRACTOR COLUMN IS HELD IN A RANGE SUFFFICIENT TO SEPARATE INDIVIDUAL SOLID PARTICLES OF MATERIAL IN SAID BEDS TO PROVIDE RANDOM PARTICLE MOVEMENT THROUGHOUT EACH OF SAID BEDS, TO CARRY LIQUIDS UP THROUGH THE SUCCESSIVE BEDS OF
Claim 2
Dependent Claim
145 words
A CONTINUOUS DEHYDRATION AND OIL EXTRACTION PROCESS, COMPRISING THE STEPS OF: A. SUPPLYING FINELY-DIVIDED OIL-BEARING SOLID PARTICULATE MATERIAL INTO THE TOP OF AN EXTRACTOR COLUMN HAVING A PLURALITY OF SUCCESSIVE, VERTICALLY SPACED PLATES SEVERALLY PROVIDED WITH A PLURALITY OF OPENINGS THERETHROUGH, SAID PLATES SUPPORTING SAID MATERIAL IN A SERIES OF VERTICALLY SPACES BEDS, B. INTRODUCING EXTRACTION SOLVENT VAPOR INTO THE BOTTOM OF SAID EXTRACTOR COLUMN TO PASS UPWARDLY THROUGH SAID OPENINGS AND BEDS TO ACT UPON SAID MATERIAL AND TO PASS OUT OF THE TOP OF SAID EXTRACTOR COLUMN, AND C. CONTROLLING SUCH INTRODUCTION OF SAID EXTRACTION SOLVENT VAPOR SO THAT THE VELOCITY OF SAME RISING THROUGH SAID EXTRACTOR COLUMN IS HELD IN A RANGE SUFFFICIENT TO SEPARATE INDIVIDUAL SOLID PARTICLES OF MATERIAL IN SAID BEDS TO PROVIDE RANDOM PARTICLE MOVEMENT THROUGHOUT EACH OF SAID BEDS, TO CARRY LIQUIDS UP THROUGH THE SUCCESSIVE BEDS OF
Claim 3
Dependent Claim
35 words
The continuous dehydration and oil extraction process as set forth in claim 1, including the further step of: a. adding liquid solvent to said extractor column at an intermediate point to act upon said material.
Claim 4
Dependent Claim
52 words
The continuous dehydration and oil extraction process as set forth in claim 1, wherein: a. the products disposed above the uppermost bed have a temperature not exceeding the azeotropic boiling point of the solvent and water by more than 15 percent of the difference between the azeotropic and the normal boiling points.
Claim 5
Dependent Claim
46 words
The continuous dehydration and oil extraction process as set forth in claim 1, including the further step of: a. agitating said material in each of said beds to encourage settling of said particles through at least one of said openings provided through each of said plates.
Claim 6
Dependent Claim
31 words
The continuous dehydration and oil extraction process as set forth in claim 1, including the further step of: a. superheating said solvent vapor prior to its introduction into said extractor column.
Claim 7
Dependent Claim
52 words
The continuous dehydration and oil extraction process as set forth in claim 1, including the further steps of: a. withdrawing miscella from said pool, b. subjecting such withdrawn miscella to centrifugal action to separate fines of said material, and c. introducing such separated fines into said extractor column through the top thereof.
Claim 8
Dependent Claim
34 words
The continuous dehydration and oil extraction process as set forth in claim 1, including the further step of: a. recycling uncondensed solvent vapors that have passed out of the top of said extractor column.
Claim 9
Dependent Claim
46 words
The continuous dehydration and oil extraction process as set forth in claim 1, including the further step of: a. removing such dehydrated and de-oiled material from the bottom of said extractor column at a rate responsive to the temperature at a lower one of said beds.
References Cited (Backward Citations)
US2663623A
Cited
US3170767A
Cited
US3297731A
Cited
US3535354A
Cited
US3674657A
Cited
US3723487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |