US3303364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for and method of recovering alkalis from products of combustion
Assignee: Avco Corp
•
Filing: 1963-10-14
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Granted: 1967-02-07
•
Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Finn A Hals
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:58
CPC Classifications
B; B01; B01D; B01D51/00; B01D51/10; H; H02; H02K; H02K44/00; H02K44/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
THE METHOD OF RECOVERING ALKALI FROM A GAS AT INITIALLY A TEMPERATURE OF ABOUT 5000*F. COMPRISING ALKALI AND THE PRODUCTS OF COMBUSTION OF COAL, SAID ALKALI HAVING BEEN INTRODUCED INTO SAID GAS TO INCREASE ITS ELECTRICAL CONDUCTIVITY, COMPRISING THE STEPS OF: (A) SUPPLYING SAID GAS TO A SEPARATOR AT A TEMPERATURE GREATER THAN 3000*F.; (B) PASSING SAID GAS THROUGH SAID SEPARATOR TO REMOVE CONDENSED NONCOMBUSTIBLE MATTER IN SAID GAS; (C) REGULATING THE TEMPERATURE OF SAID GAS TO MAINTAIN THE TEMPERATURE THEREOF AT THE GAS OUTLET OF SAID SEPARATOR AT A VALUE LESS THAN THE CONDENSATION TEMPERATURE OF SUBSTANTIALLY ALL OF THE NONCOMBUSTIBLE MATTER OTHER THAN SAID ALKALI IN SAID GAS AND GREATER THAN ABOUT 3000*F. WHEREBY SUBSTANTIALLY ALL OF SAID ALKALI IN SAID SEPARATOR DOES NOT REACT WITH THE OTHER NONCOMBUSTIBLE MATTER IN SAID SEPARATOR TO FORM CHEMICAL COMPOUNDS; (D) COOLING SAID GAS DOWNSTREAM OFSAID SEPARATOR TO A TEMPERATURE SUFFICIENT TO CONDENSE SAID ALKALI IN SAID GAS; AND (E) REMOVING SAID CONDENSED ALKALI FROM SAID GAS.
Claim 2
Independent Claim
166 words
THE METHOD OF RECOVERING ALKALI FROM A GAS AT INITIALLY A TEMPERATURE OF ABOUT 5000*F. COMPRISING ALKALI AND THE PRODUCTS OF COMBUSTION OF COAL, SAID ALKALI HAVING BEEN INTRODUCED INTO SAID GAS TO INCREASE ITS ELECTRICAL CONDUCTIVITY, COMPRISING THE STEPS OF: (A) SUPPLYING SAID GAS TO A SEPARATOR AT A TEMPERATURE GREATER THAN 3000*F.; (B) PASSING SAID GAS THROUGH SAID SEPARATOR TO REMOVE CONDENSED NONCOMBUSTIBLE MATTER IN SAID GAS; (C) REGULATING THE TEMPERATURE OF SAID GAS TO MAINTAIN THE TEMPERATURE THEREOF AT THE GAS OUTLET OF SAID SEPARATOR AT A VALUE LESS THAN THE CONDENSATION TEMPERATURE OF SUBSTANTIALLY ALL OF THE NONCOMBUSTIBLE MATTER OTHER THAN SAID ALKALI IN SAID GAS AND GREATER THAN ABOUT 3000*F. WHEREBY SUBSTANTIALLY ALL OF SAID ALKALI IN SAID SEPARATOR DOES NOT REACT WITH THE OTHER NONCOMBUSTIBLE MATTER IN SAID SEPARATOR TO FORM CHEMICAL COMPOUNDS; (D) COOLING SAID GAS DOWNSTREAM OFSAID SEPARATOR TO A TEMPERATURE SUFFICIENT TO CONDENSE SAID ALKALI IN SAID GAS; AND (E) REMOVING SAID CONDENSED ALKALI FROM SAID GAS.
References Cited (Backward Citations)
US3214619A
Cited
US3223960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |