US3927975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for suppressing liquid sulfur trioxide
Assignee: Stauffer Chemical Co
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Filing: 1974-08-26
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Granted: 1975-12-23
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Expires: 1994-08-26
Abstract
Abstract A system is provided to seal over the surface of liquid sulfur trioxide so as to prevent reaction with moisture vapor in the air to form sulfuric acid aerosol commonly referred to as ''''smoke''''. This is brought about by adding an inert immiscible oil slurried with glass bubbles to reduce the specific gravity of the oilslurry so that it will float on and seal the surface of the liquid sulfur trioxide.
Inventors
- 👤 Clark A Sumner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:38
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A METHOD FOR SUBSTANTIALLY REDUCING THE FORMATION OF SULFURIC ACID AEROSOL SMOKE FROM LIQUID SULFUR TRIOXIDE AFTER A SPILL OF SAID LIQUID SULFUR TRIOXIDE, COMPRISING THE STEPS OF: A. CONFINING THE LIQUID SULFUR TRIOXIDE; B. APPLYING TO THE TOP SURFACE OF SAID LIQUID SULFUR TRIOXIDE SPILL AN INERT NON-REACTIVE AND IMMISCIBLE OIL WHICH HAS BEEN SLURRIED WITH A PREDETERMINED AMOUNT OF INERT SOLID DILUENT TO ADJUST THE SPECIFIC GRAVITY THEREOF TO LESS THAN THAT OF LIQUID SULFUR TRIOXIDE; SAID INERT NON-REACTIVE AND IMMISCIBLE OIL DEFINED AS A LINEAR POLYMER HAVING THE FORMULA
Claim 2
Independent Claim
92 words
A METHOD FOR SUBSTANTIALLY REDUCING THE FORMATION OF SULFURIC ACID AEROSOL SMOKE FROM LIQUID SULFUR TRIOXIDE AFTER A SPILL OF SAID LIQUID SULFUR TRIOXIDE, COMPRISING THE STEPS OF: A. CONFINING THE LIQUID SULFUR TRIOXIDE; B. APPLYING TO THE TOP SURFACE OF SAID LIQUID SULFUR TRIOXIDE SPILL AN INERT NON-REACTIVE AND IMMISCIBLE OIL WHICH HAS BEEN SLURRIED WITH A PREDETERMINED AMOUNT OF INERT SOLID DILUENT TO ADJUST THE SPECIFIC GRAVITY THEREOF TO LESS THAN THAT OF LIQUID SULFUR TRIOXIDE; SAID INERT NON-REACTIVE AND IMMISCIBLE OIL DEFINED AS A LINEAR POLYMER HAVING THE FORMULA
Claim 3
Dependent Claim
33 words
The system as set forth in claim 1 wherein said inert solid diluent is present in an amount ranging between 1/2 to 2 pArts by volume oil to 1 part by volume diluent.
Claim 4
Dependent Claim
26 words
The system as set forth in claim 2 wherein said inert solid diluent is spherical glass bubbles having a size ranging between 10 and 160 microns.
Claim 5
Dependent Claim
12 words
The system as set forth in claim 1 wherein said oil is:
References Cited (Backward Citations)
US1814053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |