Patent US2614065A successfully refreshed from Google Patents.
US2614065A
Expired / Lapsed
US
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Propane dewaxing chilling procedure
Assignee: Standard Oil Co
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Filing: 1950-03-30
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Granted: 1952-10-14
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Expires: 1970-03-30
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Wanderer
- 👤 Jr Leonard A Hays
- 👤 Robert B Selund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:24
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
THE METHOD OF CHILLING A PROPANE-OIL-WAX SOLUTION TO OBTAIN A WAX SLURRY OF IMPROVED FILTERABILITY, WHICH METHOD COMPRISES REDUCING THE TEMPERATURE OF SAID SOLUTION TO A POINT WHICH IS SLIGHTLY ABOVE THE VISUAL CLOUD POINT OF THE SOLUTION, THEN FLASH CHILLING SAID SOLUTION THROUGH A TEMPERATURE RANGE AT LEAST ABOUT 5* F. BUT NOT MORE THAN ABOUT 25* F. BY PASSING IT INSTANTANEOUSLY TO A ZONE OF LOWER PRESSURE WHICH PRESSURE IS SUFFICIENT TO MAINTAIN THE SOLUTION AT A TEMPERATURE SLIGHTLY LOWER THAN ITS ACTUAL CLOUD POINT WHEREBY THE SOLUTION IS SHOCK CHILLED THROUGH THE DEFINED TEMPERATURE RANGE, AND FURTHER CHILLING SAID SOLUTION BY EVAPORATIVE COOLING TO A WAX FILTRATION TEMPERATURE.
Claim 2
Independent Claim
111 words
THE METHOD OF CHILLING A PROPANE-OIL-WAX SOLUTION TO OBTAIN A WAX SLURRY OF IMPROVED FILTERABILITY, WHICH METHOD COMPRISES REDUCING THE TEMPERATURE OF SAID SOLUTION TO A POINT WHICH IS SLIGHTLY ABOVE THE VISUAL CLOUD POINT OF THE SOLUTION, THEN FLASH CHILLING SAID SOLUTION THROUGH A TEMPERATURE RANGE AT LEAST ABOUT 5* F. BUT NOT MORE THAN ABOUT 25* F. BY PASSING IT INSTANTANEOUSLY TO A ZONE OF LOWER PRESSURE WHICH PRESSURE IS SUFFICIENT TO MAINTAIN THE SOLUTION AT A TEMPERATURE SLIGHTLY LOWER THAN ITS ACTUAL CLOUD POINT WHEREBY THE SOLUTION IS SHOCK CHILLED THROUGH THE DEFINED TEMPERATURE RANGE, AND FURTHER CHILLING SAID SOLUTION BY EVAPORATIVE COOLING TO A WAX FILTRATION TEMPERATURE.
Claim 3
Dependent Claim
166 words
IN A CHILLING SYSTEM FOR A PROPANE DEWAXING PLANT WHICH COMPRISES A HOLDING COMPRESSOR WITH ITS ASSOCIATED INLET LINE AND DISCHARGE LINE, A WARM SOLUTION DRUM CONNECTED THROUGH PRESSURE CONTROL VALVES WITH THE COMPRESSOR DISCHARGE LINE, A CHILLER CONNECTED BY A SOLUTION INLET LINE TO THE SOLUTION DRUM, A HEAT EXCHANGER CONNECTED BY A VALVE-CONTAINING LINE TO THE SOLUTION DRUM, A CHILLING COMPRESSOR DISCHARGING INTO THE HOLDING COMPRESSOR DISCHARGE LINE AND CONNECTIONS BETWEEN THE CHILLER AND THE CHILLING COMPRESSOR, THE IMPROVED STRUCTURE WHICH COMPRISES A CONNECTING LINE BETWEEN SAID WARM SOLUTION DRUM AND SAID HOLDING COMPRESSOR INLET LINE AND A PRESSURE CONTROL VALVE IN SAID CONNECTING LINE FOR ENABLING THE WARM SOLUTION DRUM TO OPERATE AT A SUBSTANTIALLY CONSTANT PRESSURE SUFFICIENTLY LOW TO EFFECT FLASH CHILLING OF SOLUTION FROM SLIGHTLY ABOVE ITS VISUAL CLOUD POINT THROUGH A RANGE OF AT LEAST ABOUT 5* F. BUT NOT MORE THAN ABOUT 25* F. AS IT PASSES THROUGH THE VALVE-CONTAINING LINE BETWEEN SAID EXCHANGER AND SAID WARM SOLUTION DRUM.
Claim 4
Dependent Claim
166 words
IN A CHILLING SYSTEM FOR A PROPANE DEWAXING PLANT WHICH COMPRISES A HOLDING COMPRESSOR WITH ITS ASSOCIATED INLET LINE AND DISCHARGE LINE, A WARM SOLUTION DRUM CONNECTED THROUGH PRESSURE CONTROL VALVES WITH THE COMPRESSOR DISCHARGE LINE, A CHILLER CONNECTED BY A SOLUTION INLET LINE TO THE SOLUTION DRUM, A HEAT EXCHANGER CONNECTED BY A VALVE-CONTAINING LINE TO THE SOLUTION DRUM, A CHILLING COMPRESSOR DISCHARGING INTO THE HOLDING COMPRESSOR DISCHARGE LINE AND CONNECTIONS BETWEEN THE CHILLER AND THE CHILLING COMPRESSOR, THE IMPROVED STRUCTURE WHICH COMPRISES A CONNECTING LINE BETWEEN SAID WARM SOLUTION DRUM AND SAID HOLDING COMPRESSOR INLET LINE AND A PRESSURE CONTROL VALVE IN SAID CONNECTING LINE FOR ENABLING THE WARM SOLUTION DRUM TO OPERATE AT A SUBSTANTIALLY CONSTANT PRESSURE SUFFICIENTLY LOW TO EFFECT FLASH CHILLING OF SOLUTION FROM SLIGHTLY ABOVE ITS VISUAL CLOUD POINT THROUGH A RANGE OF AT LEAST ABOUT 5* F. BUT NOT MORE THAN ABOUT 25* F. AS IT PASSES THROUGH THE VALVE-CONTAINING LINE BETWEEN SAID EXCHANGER AND SAID WARM SOLUTION DRUM.
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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) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |