US4308106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing substantially all water from an alcohol-containing solution for use as a motor fuel or motor fuel additive
Assignee: THIRD CENTURY VENTURE Corp A CORP OF
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Filing: 1980-08-01
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Granted: 1981-12-29
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Expires: 2000-08-01
Abstract
Abstract A process and still for removing substantially all water from an alcohol-containing solution. The solution is distilled in a rectification column under reduced pressure of about 40 mm Hg or less, and the distillate later collected and condensed having a water content of about 2% by volume or less. Heating for distilling the original solution and cooling for condensing the distilled alcohol vapors are supplied to the system by an external, closed-loop heat pump.
Inventors
- 👤 Robert L. Mannfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:56
CPC Classifications
F; F25; F25B; F25B29/00; F25B29/003; B; B01; B01D; B01D3/00; B01D3/007; B01D3/10; C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; Y; Y02; Y02B; Y02B30/00; Y02B30/52; Y02P; Y02P20/00; Y02P20/10; Y10; Y10S; Y10S203/00; Y10S203/04; Y10S203/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
105 words
A process for removing substantially all water from an ethyl alcohol-containing solution, comprising the steps of: (a) charging a boiler with an ethyl alcohol- and water-containing solution; (b) distilling the solution in the absence of an entrainer in a single distillation column with reflux to achieve a distillate having a water content of about 2% or less by volume; (c) placing the column under reduced pressure of about 40 mm Hg or less and maintaining the same during said distilling; (d) collecting and condensing the distillate in a condenser; and (e) supply heating for said distilling and cooling for said condensing from a heat pump.
Claim 2
Dependent Claim
105 words
A process for removing substantially all water from an ethyl alcohol-containing solution, comprising the steps of: (a) charging a boiler with an ethyl alcohol- and water-containing solution; (b) distilling the solution in the absence of an entrainer in a single distillation column with reflux to achieve a distillate having a water content of about 2% or less by volume; (c) placing the column under reduced pressure of about 40 mm Hg or less and maintaining the same during said distilling; (d) collecting and condensing the distillate in a condenser; and (e) supply heating for said distilling and cooling for said condensing from a heat pump.
Claim 3
Dependent Claim
23 words
The process in claim 1 additionally comprising using the distillate as a motor fuel either as produced or in combination with other ingredients.
Claim 4
Dependent Claim
19 words
The process in claim 1 wherein said charging is with a solution containing at least about 50% ethyl alcohol.
Claim 5
Dependent Claim
19 words
The process in claim 1 wherein said charging is with a solution containing at least about 95% ethyl alcohol.
Claim 6
Dependent Claim
14 words
The process in claim 1 in which said charging is with a beer solution.
Claim 7
Dependent Claim
18 words
The process in claim 1 in which the distillate has a water content of about 0.5% or less.
References Cited (Backward Citations)
US1860554A
Cited
US3486985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-28 | 1985-06-29 | 1985-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-28 | 1989-06-29 | 1989-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-28 | 1993-06-29 | 1993-12-29 | $7700.00 | Window Closed / Lapsed |