US3873427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurizing coke using a ferruginous material and a metal chloride
Assignee: Lummus Technology LLC
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Filing: 1973-08-31
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Granted: 1975-03-25
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Expires: 1993-08-31
Abstract
Abstract Coke is desulfurized at a temperature of at least 2,100*F., in the presence of a ferruginous material and a metal chloride. The ferruginous material and metal chloride may be blended with a coking feedstock, either solid or liquid, derived from coal or petroleum which is coked, with the desulfurization being effected during coking or subsequent thereto. Alternatively, the ferruginous material and metal chloride may be added to the coke which is then desulfurized at a temperature of at least 2,100*F. In the case of coke produced from pyrites containing coal, the ferruginous material can be omitted.
Inventors
- 👤 Raymond H Long
- 👤 Morgan C Sze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:12
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/02; C10B; C10B55/00; C10B57/00; C10B57/04; C10B57/06
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
125 words
A PROCESS FOR DESULFURIZING COKE, COMPRISING: HEATING COKE IN ADMIXTURE WITH A DESULFURIZING AMOUNT OF A DESULFURIZING ADDITIVE TO A TEMPERATURE OF AT LEAST 2100*F, SAID DESULFURIZING ADDITIVE COMPRISING A FERRUGINOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF IRON, OXIDES OF IRON AND MIXTURES THEREOF AND A METAL CHLORIDE SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM CHLORIDE, CALCIUM CHLORIDE, FERROUS CHLORIDE, FERRIC CHLORIDE AND MIXTURES THEROF, AND FERRUGINOUS MATERIAL BEING PRESENT IN A FERRUGINOUS MATERIAL TO COKE WEIGHT RATIO FROM 1:4 TO 1:30 AND THE METAL CHLORIDE BEING PRESENT IN A METAL CHLORIDE TO FERRUGINOUS MATERIAL WEIGHT RATIO FROM 4:1 TO 1:100; AND MAINTAINING THE COKE AT A TEMPERATURE OF AT LEAST 2100*F TO PRODUCE A DESULFURIZED COKE CONTAINING NO MORE THAN 0.85 PERCENT SULFUR.
Claim 2
Dependent Claim
125 words
A PROCESS FOR DESULFURIZING COKE, COMPRISING: HEATING COKE IN ADMIXTURE WITH A DESULFURIZING AMOUNT OF A DESULFURIZING ADDITIVE TO A TEMPERATURE OF AT LEAST 2100*F, SAID DESULFURIZING ADDITIVE COMPRISING A FERRUGINOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF IRON, OXIDES OF IRON AND MIXTURES THEREOF AND A METAL CHLORIDE SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM CHLORIDE, CALCIUM CHLORIDE, FERROUS CHLORIDE, FERRIC CHLORIDE AND MIXTURES THEROF, AND FERRUGINOUS MATERIAL BEING PRESENT IN A FERRUGINOUS MATERIAL TO COKE WEIGHT RATIO FROM 1:4 TO 1:30 AND THE METAL CHLORIDE BEING PRESENT IN A METAL CHLORIDE TO FERRUGINOUS MATERIAL WEIGHT RATIO FROM 4:1 TO 1:100; AND MAINTAINING THE COKE AT A TEMPERATURE OF AT LEAST 2100*F TO PRODUCE A DESULFURIZED COKE CONTAINING NO MORE THAN 0.85 PERCENT SULFUR.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the coke is a petroleum coke.
Claim 4
Dependent Claim
31 words
The process of claim 2 wherein the coke is maintained at a temperature of at least 2100*F. to produce a coke having a sulfur content of no greater than 0.5 percent.
Claim 5
Dependent Claim
17 words
The process of claim 2 wherein the coke is heated to a temperature no greater than 2600*F.
Claim 6
Dependent Claim
17 words
The process of claim 2 wherein the coke is heated to a temperature from 2100*F. to 2300*F.
Claim 7
Dependent Claim
35 words
The process of claim 2 wherein the desulfurizing additive is added to the petroleum feedstock prior to coking, the petroleum feedstock being coked and the coke being desulfurized in the presence of the desulfurizing additive.
Claim 8
Dependent Claim
18 words
The process of claim 2 wherein the coke is heated to a temperature of from 2100*F. to 2300*F.
Claim 9
Dependent Claim
30 words
The process of claim 3 wherein the ferruginous material which is admixed with the coke has a particle size of -100 mesh with at least 50 percent being -325 mesh.
Claim 10
Dependent Claim
91 words
A process for desulfurizing a coke produced from a pyrites containing coal, comprising: heating said coke to a temperature of at least 2100*F in admixture with a solid desulfurizing additive comprising a metal chloride selected from the group consisting of magnesium chloride, calcium chloride, ferrous chloride, ferric chloride and mixtures thereof, said metal chloride being present in a metal chloride to coke weight ratio from 0.0003:1 to 1:1; and maintaining the coke at a temperature of at least 2100*F to produce a desulfurized coke containing no more than 0.85 percent sulfur.
Claim 11
Dependent Claim
91 words
A process for desulfurizing a coke produced from a pyrites containing coal, comprising: heating said coke to a temperature of at least 2100*F in admixture with a solid desulfurizing additive comprising a metal chloride selected from the group consisting of magnesium chloride, calcium chloride, ferrous chloride, ferric chloride and mixtures thereof, said metal chloride being present in a metal chloride to coke weight ratio from 0.0003:1 to 1:1; and maintaining the coke at a temperature of at least 2100*F to produce a desulfurized coke containing no more than 0.85 percent sulfur.
Claim 12
Dependent Claim
65 words
The process of claim 9 wherein the desulfurizing additive further comprises a ferruginous material selected from the group consisting of an oxide of iron, iron and mixtures thereof, the ferruginous material being present in a ferruginous material to coke weight ratio from 1:4 to 1:30 and the metal chloride being present in a metal chloride to ferruginous material weight ratio of from 4:1 to 1:100.
Claim 13
Dependent Claim
17 words
The process of claim 9 wherein the coke is heated to a temperature no greater than 2600*F.
Claim 14
Dependent Claim
17 words
The process of claim 9 wherein the coke is heated to a temperature from 2100*F. to 2300*F.
Claim 15
Dependent Claim
34 words
The process of claim 9 wherein the desulfurizing additive is added to the coal prior to coking thereof, the coal being coked and the coke being desulfurized in the presence of the desulfurizing additive.
Claim 16
Dependent Claim
17 words
The process of claim 10 wherein the coke is heated to a temperature from 2100*F. to 2300*F.
Claim 17
Dependent Claim
34 words
The process of claim 10 wherein the desulfurizing additive is added to the coal prior to coking thereof, the coal being coked and the coke being desulfurized in the presence of the desulfurizing additive.
Claim 18
Dependent Claim
17 words
The process of claim 10 wherein the coke is heated to a temperature of 2100*F. to 2300*F.
Claim 19
Dependent Claim
31 words
The process of claim 10 wherein the coke is maintained at a temperature of at least 2100*F to produce a coke having a sulfur content of no greater than 0.5 percent.
Claim 20
Dependent Claim
29 words
The process of claim 17 wherein the ferruginous material in admixture with the coke has a particle size of -100 mesh, with at least 50 percent 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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |