US2970887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorination of metal oxides
Assignee: Texas Gulf Sulphur Co
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Filing: 1957-04-05
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Granted: 1961-02-07
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Expires: 1977-04-05
Abstract
No abstract record available.
Inventors
- 👤 Cryil T Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:32
CPC Classifications
C; C01; C01G; C01G1/00; C01G1/06; C01B; C01B19/00; C01B19/005; C01G28/00; C01G28/007; C01G30/00; C01G30/006; C01G30/007; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
321 words
A PROCESS FOR PRODUCING METAL CHLORIDES WHICH COMPRISES PASSING A METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF ANTIMONY TRIOXIDE, TITANIUM DIOXIDE, ARSENIC TRIOXIDE, BISMUTH TRIOXIDE, GERMANIUM OXIDE, SELENIUM OXIDE, STANNIC OXIDE, VANADIUM DIOXIDE, ZIRCONIUM DIOXIDE, COLUMBIUM OXIDE, TUNGSTEN OXIDE AND TANTALUM OXIDE TO A FIRST REACTION ZONE, PASSING LIQUID SULFUR TO THE FIRST REACTION ZONE IN AN AMOUNT OF ABOUT 2.5 TO 10 TIMES THE WEIGHT OF THE METAL OXIDE, PASSIONG A CHLORINATING AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR CHLORIDE, FERRIC CHLORIDE AND CHLORINE TO THE FIRST REACTION ZONE IN AN AMOUNT LESS THAN THE STOICHIOMETRIC QUANITY NEEDED TO REACT WITH ALL OF THE SAID METAL OXIDE, THEREBY CHLORINATING THE METAL OXIDE TO PRODUCE A VOLATILE METAL CHLORIDE AND SULFUR DIOXIDE, THE TEMPERATURE IN THE FIRST REACTION ZONE BEING MAINTAINED ABOVE THE BOILING POINT OF THE METAL CHLORIDE BUT BELOW THE BOILING POINT OF SULFUR WITHDRAWING VOLATILIZED METAL CHLORIDE AND SULFUR DIOXIDE FROM THE FIRST REACTION ZONE, WITHDRAWING THE REACTION MASS COMPRISING UNREACTED METAL OXIDE AND SULFUR FROM THE FIRST REACTION ZONE AND PASSING THE SAME TO A SECOND REACTION ZONE, PASSING A CHLORINATED AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR CHLORIDE, CHLORINE AND FERRIC CHLORIDE TO THE SECOND REACTION MASS IN AN AMOUNT TO REACT WITH THE REMAINDER OF THE METAL OXIDE, PASSING LIQUID SULFUR TO THE SECOND REACTION ZONE IN AN AMOUNT TO MAINTAIN ABOUT 2.5 TO 10 TIMES THE WEIGHT OF METAL OXIDE, THEREBY CHLORINATING THE METAL OXIDE TO PRODUCE METAL CHLORIDE AND SULFUR DIOXIDE, MAINTAINING A TEMPERATURE ABOVE THE BOILING POINT OF THE METAL CHLORIDE BUT BELOW THE BOILING POINT OF LIQUID SULFUR IN THE SECOND REACTION ZONE, WITHDRAWING VOLATILIZED METAL CHLORIDE AND SULFUR DIOXIDE FROM THE SEOND REACTION ZONE, WITHDRAWING THE LIQUID REACTION MASS FROM THE SECOND FEACTION ZONE, SEPARATING LIQUID SULFUR FROM THE LIQUID REACTION MASS, AND RECYCLING A PORTION OF THE LIQUID SULFUR TO THE SECOND REACTION ZONE AS AFORESAID.
Claim 2
Dependent Claim
321 words
A PROCESS FOR PRODUCING METAL CHLORIDES WHICH COMPRISES PASSING A METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF ANTIMONY TRIOXIDE, TITANIUM DIOXIDE, ARSENIC TRIOXIDE, BISMUTH TRIOXIDE, GERMANIUM OXIDE, SELENIUM OXIDE, STANNIC OXIDE, VANADIUM DIOXIDE, ZIRCONIUM DIOXIDE, COLUMBIUM OXIDE, TUNGSTEN OXIDE AND TANTALUM OXIDE TO A FIRST REACTION ZONE, PASSING LIQUID SULFUR TO THE FIRST REACTION ZONE IN AN AMOUNT OF ABOUT 2.5 TO 10 TIMES THE WEIGHT OF THE METAL OXIDE, PASSIONG A CHLORINATING AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR CHLORIDE, FERRIC CHLORIDE AND CHLORINE TO THE FIRST REACTION ZONE IN AN AMOUNT LESS THAN THE STOICHIOMETRIC QUANITY NEEDED TO REACT WITH ALL OF THE SAID METAL OXIDE, THEREBY CHLORINATING THE METAL OXIDE TO PRODUCE A VOLATILE METAL CHLORIDE AND SULFUR DIOXIDE, THE TEMPERATURE IN THE FIRST REACTION ZONE BEING MAINTAINED ABOVE THE BOILING POINT OF THE METAL CHLORIDE BUT BELOW THE BOILING POINT OF SULFUR WITHDRAWING VOLATILIZED METAL CHLORIDE AND SULFUR DIOXIDE FROM THE FIRST REACTION ZONE, WITHDRAWING THE REACTION MASS COMPRISING UNREACTED METAL OXIDE AND SULFUR FROM THE FIRST REACTION ZONE AND PASSING THE SAME TO A SECOND REACTION ZONE, PASSING A CHLORINATED AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR CHLORIDE, CHLORINE AND FERRIC CHLORIDE TO THE SECOND REACTION MASS IN AN AMOUNT TO REACT WITH THE REMAINDER OF THE METAL OXIDE, PASSING LIQUID SULFUR TO THE SECOND REACTION ZONE IN AN AMOUNT TO MAINTAIN ABOUT 2.5 TO 10 TIMES THE WEIGHT OF METAL OXIDE, THEREBY CHLORINATING THE METAL OXIDE TO PRODUCE METAL CHLORIDE AND SULFUR DIOXIDE, MAINTAINING A TEMPERATURE ABOVE THE BOILING POINT OF THE METAL CHLORIDE BUT BELOW THE BOILING POINT OF LIQUID SULFUR IN THE SECOND REACTION ZONE, WITHDRAWING VOLATILIZED METAL CHLORIDE AND SULFUR DIOXIDE FROM THE SEOND REACTION ZONE, WITHDRAWING THE LIQUID REACTION MASS FROM THE SECOND FEACTION ZONE, SEPARATING LIQUID SULFUR FROM THE LIQUID REACTION MASS, AND RECYCLING A PORTION OF THE LIQUID SULFUR TO THE SECOND REACTION ZONE AS AFORESAID.
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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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |