US3878051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurizing coke with phosgene or a mixture of carbon monoxide and chlorine
Assignee: Individual
•
Filing: 1973-08-31
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Granted: 1975-04-15
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Expires: 1993-08-31
Abstract
Abstract Coke is desulfurized by contacting coke with phosgene gas or a mixture of carbon monoxide and chlorine, at a temperature from 1200*-1800*F. to produce coke having a sulfur content of no greater than 0.85%. The coke may be admixed with a ferruginous material and/or ferric sulfate or sulfuric acid as a desulfurizing promoter.
Inventors
- 👤 Raymond H Long
- 👤 Morgan C Sze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:30
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/02; C10B; C10B55/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
88 words
A PROCESS FOR DESULFURIZING COKE, COMPRISING: CONTACTING THE COKE WITH A DESULFURIZING GAS COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHOSGENE AND A MIXTURE OF CARBON MONOXIDE AND CHLORINE, SAID CONTACTING BEING EFFECTED AT A COKE TEMPERATURE FROM 1200*F. TO 1800*F. FOR A TIME SUFFICIENT TO PRODUCE A COKE WITH A SULFUR CONTENT OF NO GREATER THAN 0.85%, SAID COKE BEING ADMIXED WITH A FERRUGINUOUS MATERIAL COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXIDES OF IRON, IRON AND MIXTURES THEREOF FOR DESULFURIZING A COKE
Claim 2
Dependent Claim
88 words
A PROCESS FOR DESULFURIZING COKE, COMPRISING: CONTACTING THE COKE WITH A DESULFURIZING GAS COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHOSGENE AND A MIXTURE OF CARBON MONOXIDE AND CHLORINE, SAID CONTACTING BEING EFFECTED AT A COKE TEMPERATURE FROM 1200*F. TO 1800*F. FOR A TIME SUFFICIENT TO PRODUCE A COKE WITH A SULFUR CONTENT OF NO GREATER THAN 0.85%, SAID COKE BEING ADMIXED WITH A FERRUGINUOUS MATERIAL COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXIDES OF IRON, IRON AND MIXTURES THEREOF FOR DESULFURIZING A COKE
Claim 3
Dependent Claim
37 words
The process of claim 1 wherein the coke which is desulfurized is produced from a petroleum feedstock and the coke is admixed with a desulfurizing amount of a ferruginous material during said contacting with the desulfurizing gas.
Claim 4
Dependent Claim
35 words
The process of claim 2 wherein the coke is further admixed with a desulfurizing amount of a desulfurizing promoter comprising a member selected from the group consisting of sulfuric acid, ferric sulfate and mixtures thereof.
Claim 5
Dependent Claim
14 words
The process of claim 3 wherein the coke temperature is from 1400*F. to 1800*F.
Claim 6
Dependent Claim
23 words
The process of claim 4 wherein the ferruginous material is present in a ferruginous material to coke weight ratio from 5:95 to 25:75.
Claim 7
Dependent Claim
17 words
The process of claim 5 wherein the desulfurizing gas is a mixture of carbon monoxide and chlorine.
Claim 8
Dependent Claim
25 words
The process of claim 6 wherein the desulfurizing promoter is present in an amount from about 1% to about 8%, by weight, of the coke.
Claim 9
Dependent Claim
19 words
The process of claim 1 wherein the coke which is desulfurized is produced from a pyrites containing coal feedstock.
Claim 10
Dependent Claim
30 words
The process of claim 8 wherein the coke is admixed with a desulfurizing additive comprising a member selected from the group consisting of sulfuric acid, ferric sulfate and mixtures thereof.
Claim 11
Dependent Claim
15 words
The process of claim 9 wherein the coke contacting temperature is from 1400*F. to 1800*F.
Claim 12
Dependent Claim
17 words
The process of claim 10 wherein the desulfurizing gas is a mixture of carbon monoxide and chlorine.
Claim 13
Dependent Claim
25 words
The process of claim 10 wherein the desulfurizing additive is present in an amount from about 1% to about 8%, by weight, of the coke.
Claim 14
Dependent Claim
32 words
The process of claim 12 wherein the coke is further admixed with a desulfurizing amount of a ferruginous material selected from the group consisting of oxides of iron, iron and mixtures thereof.
Claim 15
Dependent Claim
30 words
The process of claim 7 wherein the coke is maintained at a temperature from 1400*F to 1800*F to produce a coke having a sulfur content of no greater than 0.85%.
Claim 16
Dependent Claim
26 words
The process of claim 14 wherein the ferruginous material admixed with coke has a particle size of -100 mesh with at least 50% being -325 mesh.
Claim 17
Dependent Claim
30 words
The process of claim 11 wherein the coke is maintained at a temperature from 1400*F to 1800*F to produce a coke having a sulfur content of no greAter than 0.85%.
Claim 18
Dependent Claim
22 words
The process of claim 13 wherein the ferruginous material has a particle size of -100 with at least 50% being -325 mesh.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |