Patent US2651526A successfully refreshed from Google Patents.
Patent US2556176A successfully refreshed from Google Patents.
← Back to Patent Explorer
US2556176A Expired / Lapsed US ⏱️ 0.0 years remaining

Carbon disulfide process

Assignee: GREAT LAKES CARBON Corp
•
Filing: 1948-04-19
•
Granted: 1951-06-12
•
Expires: 1968-04-19
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Bernard W Gamson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 13:23
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/70

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 181 words
A PROCESS FOR PRODUCING CARBON DISULFIDE WHICH COMPRISES INTRODUCING SULFUR VAPOR AND A FINELY REACTIVE CARBON COMPOSITION COMPRISING SULFUR, CARBON AND HYDROGEN IN CHEMICAL COMBINATION INTO A REACTION ZONE MAINTAINED AT 1100-1800* F., THE CARBON OF SAID COMPOSITION BEING CAPABLE OF BEING CONVERTED TO CARBON DISULFIDE TO THE EXTENT OF AT LEAST 95%, MAINTAINING THE COMPOSITION IN FLUIDIZED CONDITION BY MEANS OF SULFUR VAPOR, VAPORS FORMED DURING THE REACTION, AND GASES INTRODUCED AS HEREINAFTER SET FORTH UNDER CONDITIONS OF GAS VELOCITY TO FORM A DENSE PHASE AND A LIGHT PHASE OF SUSPENDED PARTICLES IN SAID REACTION ZONE, SEPARATING VAPORS CONTAINING CARBON DISULFIDE, ELEMENTAL SULFUR AND HYDROGEN SULFIDE, REMOVING SOLIDS THEREFROM, COOLING THE VAPORS TO CONDENSE THE SULFUR AS A LIQUID, SEPARATING AND RECYCLING THE LIQUID SULFUR, RECOVERING THE CARBON DISULFIDE FROM THE SUBSTANTIALLY SULFUR FREE VAPORS, CONVERTING HYDROGEN SULFIDE IN THE VAPORS FROM THE LAST NAMED STEP INTO ELEMENTAL SURFUR, AND PASSING AT LEAST A PORTION OF THE RESULTING GAS TO THE REACTION ZONE TO ASSIST IN MAINTAINING THE PARTICLES OF SAID CARBON COMPOSITION IN FLUIDIZED FORM AS ABOVE SET FORTH.
Claim 2
Dependent Claim 181 words
A PROCESS FOR PRODUCING CARBON DISULFIDE WHICH COMPRISES INTRODUCING SULFUR VAPOR AND A FINELY REACTIVE CARBON COMPOSITION COMPRISING SULFUR, CARBON AND HYDROGEN IN CHEMICAL COMBINATION INTO A REACTION ZONE MAINTAINED AT 1100-1800* F., THE CARBON OF SAID COMPOSITION BEING CAPABLE OF BEING CONVERTED TO CARBON DISULFIDE TO THE EXTENT OF AT LEAST 95%, MAINTAINING THE COMPOSITION IN FLUIDIZED CONDITION BY MEANS OF SULFUR VAPOR, VAPORS FORMED DURING THE REACTION, AND GASES INTRODUCED AS HEREINAFTER SET FORTH UNDER CONDITIONS OF GAS VELOCITY TO FORM A DENSE PHASE AND A LIGHT PHASE OF SUSPENDED PARTICLES IN SAID REACTION ZONE, SEPARATING VAPORS CONTAINING CARBON DISULFIDE, ELEMENTAL SULFUR AND HYDROGEN SULFIDE, REMOVING SOLIDS THEREFROM, COOLING THE VAPORS TO CONDENSE THE SULFUR AS A LIQUID, SEPARATING AND RECYCLING THE LIQUID SULFUR, RECOVERING THE CARBON DISULFIDE FROM THE SUBSTANTIALLY SULFUR FREE VAPORS, CONVERTING HYDROGEN SULFIDE IN THE VAPORS FROM THE LAST NAMED STEP INTO ELEMENTAL SURFUR, AND PASSING AT LEAST A PORTION OF THE RESULTING GAS TO THE REACTION ZONE TO ASSIST IN MAINTAINING THE PARTICLES OF SAID CARBON COMPOSITION IN FLUIDIZED FORM AS ABOVE SET FORTH.

References Cited (Backward Citations)

US2234769A Cited
US2248509A Cited
US2330934A Cited
US2443854A Cited
US2447003A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1954-06-11 1954-12-11 1955-06-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1958-06-11 1958-12-11 1959-06-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1962-06-11 1962-12-11 1963-06-12 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag