US3246683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparing slurry mixtures of pulverous solids and water
Assignee: Shell USA Inc
•
Filing: 1963-06-28
•
Granted: 1966-04-19
•
Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
- 👤 Yap Kie Jan
- 👤 Hartog Arie Pieter Den
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:47
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/02; B01J2/04; B01F; B01F23/00; B01F23/50; B01F23/51; B01F23/59; B01F25/00; B01F25/20; B01F25/27; B01F25/30; B01F25/31; B01F25/312; B01F25/3122; B01F25/50; B01F25/51; B01J8/00; B01J8/18; B01J8/20; C; C08; C08F; C08F6/00; Y; Y10; Y10S; Y10S159/00; Y10S159/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR PREPARING A PRODUCT SLURRY OF PULVEROUS SOLIDS AND WATER STARTING FROM AN INITIAL SLURRY OF SAID SOLIDS AND A VOLATILE ORGANIC LIQUID, WHICH COMPRISES THE STEPS OF: (A) FORMING A JET OF STREAM HAVING A VELOCITY GREATER THAN 0.8 THE SONIC VELOCITY AT THE PREVAILING TEMPERATURE AND PRESSURE BY FLOW THROUGH A NOZZLE, (C) EVAPORATING SAID VOLATILE ORGANIC LIQUID BY PROVIDING THE HEAT OF EVAPORATION THEREFOR PRINCIPALLY BY CONDENSING STEAM FROM SAID STEAM JET IN THE RESULTING MIXTURE OF STEAM CONDENSATE, SAID SOLIDS AND VAPOR, THE LATTER COMPRISING VAPORIZED ORGANIC LIQUID TOGETHER WITH ANY UNCONDENSED STEAM, AND (D) SEPARATING A PRODUCT SLURRY CONTAINING SAID CONDENSATE AND SOLIDS FROM SAID VAPOR.
Claim 2
Dependent Claim
113 words
A PROCESS FOR PREPARING A PRODUCT SLURRY OF PULVEROUS SOLIDS AND WATER STARTING FROM AN INITIAL SLURRY OF SAID SOLIDS AND A VOLATILE ORGANIC LIQUID, WHICH COMPRISES THE STEPS OF: (A) FORMING A JET OF STREAM HAVING A VELOCITY GREATER THAN 0.8 THE SONIC VELOCITY AT THE PREVAILING TEMPERATURE AND PRESSURE BY FLOW THROUGH A NOZZLE, (C) EVAPORATING SAID VOLATILE ORGANIC LIQUID BY PROVIDING THE HEAT OF EVAPORATION THEREFOR PRINCIPALLY BY CONDENSING STEAM FROM SAID STEAM JET IN THE RESULTING MIXTURE OF STEAM CONDENSATE, SAID SOLIDS AND VAPOR, THE LATTER COMPRISING VAPORIZED ORGANIC LIQUID TOGETHER WITH ANY UNCONDENSED STEAM, AND (D) SEPARATING A PRODUCT SLURRY CONTAINING SAID CONDENSATE AND SOLIDS FROM SAID VAPOR.
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |