US3183145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Odor control and heat recovery in wood pulping process
Assignee: Individual
•
Filing: 1962-06-22
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Granted: 1965-05-11
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Expires: 1982-06-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Theron T Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:15
CPC Classifications
D; D21; D21C; D21C11/00; D21C11/06; Y; Y02; Y02P; Y02P70/00; Y02P70/10; Y10; Y10S; Y10S159/00; Y10S159/04; Y10S159/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN THE SULPHATE PROCESS, THE METHOD OF TREATING HOT SULPHUR DIOXIDE CONTAINING WATER VAPOR LADEN GASES AND EVAPORATOR CONDENSATE CONTAINING NORMALLY GASEOUS ODORIFEROUS SULPHUR COMPOUNDS, COMPRISING PASSING SAID HOT GASES AND SAID CONDENSATE INTO INTIMATE CONTACT TO CONDENSE WATER VAPOR FROM SAID GASES, TO STRIP THE NORMALLY GASEOUS ODORIFEROUS SULPHUR COMPOUNDS THEREFROM AND TO TRANSFORM A PORTION THEREOF TO INNOCUOUS SUBSTANCES, CHLORINATING THE RESIDUAL ODORIFEROUS SULPHUR COMPOUNDS RETAINED IN THE GASES EVELVED FROM THE CONDENSING AND STRIPPING STEP, COOLING THE CONDENSED WATER VAPOR AND STRIPPED CONDENSATE, PASSING AIR THROUGH THE COOLED LIQUID FROM THE LAST STEP TO STRIP RESIDUAL ODORIFEROUS GASES THEREFROM, AND PASSING THE STRIPPED RESIDUAL ODORIFEROUS GASES TO SAID CONDENSING AND STRIPPING STEP.
Claim 2
Dependent Claim
115 words
IN THE SULPHATE PROCESS, THE METHOD OF TREATING HOT SULPHUR DIOXIDE CONTAINING WATER VAPOR LADEN GASES AND EVAPORATOR CONDENSATE CONTAINING NORMALLY GASEOUS ODORIFEROUS SULPHUR COMPOUNDS, COMPRISING PASSING SAID HOT GASES AND SAID CONDENSATE INTO INTIMATE CONTACT TO CONDENSE WATER VAPOR FROM SAID GASES, TO STRIP THE NORMALLY GASEOUS ODORIFEROUS SULPHUR COMPOUNDS THEREFROM AND TO TRANSFORM A PORTION THEREOF TO INNOCUOUS SUBSTANCES, CHLORINATING THE RESIDUAL ODORIFEROUS SULPHUR COMPOUNDS RETAINED IN THE GASES EVELVED FROM THE CONDENSING AND STRIPPING STEP, COOLING THE CONDENSED WATER VAPOR AND STRIPPED CONDENSATE, PASSING AIR THROUGH THE COOLED LIQUID FROM THE LAST STEP TO STRIP RESIDUAL ODORIFEROUS GASES THEREFROM, AND PASSING THE STRIPPED RESIDUAL ODORIFEROUS GASES TO SAID CONDENSING AND STRIPPING STEP.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |