Patent US3087889A successfully refreshed from Google Patents.
US3087889A
Expired / Lapsed
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Method for the desilicizing of feeding water for steam boilers
Assignee: Paterson Engineering Co Ltd
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Filing: 1959-11-16
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Granted: 1963-04-30
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Expires: 1979-11-16
Abstract
No abstract record available.
Inventors
- 👤 Goudriaan Jan Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:50
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/58; C02F1/60; C02F5/00; C02F5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
PROCESS FOR DESILICIZING FEED WATER FOR STEAM BOILERS, WHICH COMPRISES ADDING MILK OF LIME TO THE RAW WATER IN SUCH A PROPORTION AS TO PRODUCE A SOLUTION WHICH HAS A PH OF 10-14, SUBJECTING SAID SOLUTION TO A MECHANICAL FRICTIONAL TREATMENT SO THAT CRYSTALLIZATION NUCLEI ARE FORMED THEREIN, SEPARATING THE RESULTING SOLID PHASE FROM THE RESULTING SOLUTION TREATED BY MECHANICAL FRICTION SO AS TO PRODUCE A LIQUOR STILL CONTAINING SILICA-CALCIUM COMPOUNDS IN THE COLLOIDALLY DISSOLVED OR SUPER-SATURATED STATE, RECYCLING A PART OF SAID LIQUOR TO THE LIMED RAW WATER AND CARBONATING THE REMAINING PART BY CONTACTING IT WITH A GAS COMPRISING CO2 AND THEN AGAIN SEPARATING THE SOLID PHASE, THE WHOLE PROCESS BEING CARRIED OUT AT NORMAL ATMOSPHERIC TEMPERATURE.
Claim 2
Dependent Claim
119 words
PROCESS FOR DESILICIZING FEED WATER FOR STEAM BOILERS, WHICH COMPRISES ADDING MILK OF LIME TO THE RAW WATER IN SUCH A PROPORTION AS TO PRODUCE A SOLUTION WHICH HAS A PH OF 10-14, SUBJECTING SAID SOLUTION TO A MECHANICAL FRICTIONAL TREATMENT SO THAT CRYSTALLIZATION NUCLEI ARE FORMED THEREIN, SEPARATING THE RESULTING SOLID PHASE FROM THE RESULTING SOLUTION TREATED BY MECHANICAL FRICTION SO AS TO PRODUCE A LIQUOR STILL CONTAINING SILICA-CALCIUM COMPOUNDS IN THE COLLOIDALLY DISSOLVED OR SUPER-SATURATED STATE, RECYCLING A PART OF SAID LIQUOR TO THE LIMED RAW WATER AND CARBONATING THE REMAINING PART BY CONTACTING IT WITH A GAS COMPRISING CO2 AND THEN AGAIN SEPARATING THE SOLID PHASE, THE WHOLE PROCESS BEING CARRIED OUT AT NORMAL ATMOSPHERIC TEMPERATURE.
References Cited (Backward Citations)
US2604444A
Cited
GB639408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |