CA2581692A1 - Sulfur removal process - Google Patents
Sulfur removal process Download PDFInfo
- Publication number
- CA2581692A1 CA2581692A1 CA002581692A CA2581692A CA2581692A1 CA 2581692 A1 CA2581692 A1 CA 2581692A1 CA 002581692 A CA002581692 A CA 002581692A CA 2581692 A CA2581692 A CA 2581692A CA 2581692 A1 CA2581692 A1 CA 2581692A1
- Authority
- CA
- Canada
- Prior art keywords
- sulfur
- distillation unit
- catalytic cracking
- sulphur
- higher boiling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract 12
- 238000000034 method Methods 0.000 title claims abstract 5
- 229910052717 sulfur Inorganic materials 0.000 title claims 8
- 239000011593 sulfur Substances 0.000 title claims 8
- 238000009835 boiling Methods 0.000 claims abstract 7
- 239000012535 impurity Substances 0.000 claims abstract 6
- 238000004523 catalytic cracking Methods 0.000 claims abstract 5
- 229930195733 hydrocarbon Natural products 0.000 claims abstract 2
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims 6
- 238000004821 distillation Methods 0.000 claims 5
- 239000000463 material Substances 0.000 claims 3
- 230000002378 acidificating effect Effects 0.000 claims 2
- 239000011949 solid catalyst Substances 0.000 claims 2
- 239000004215 Carbon black (E152) Substances 0.000 claims 1
- 238000005336 cracking Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 abstract 3
- 229940100198 alkylating agent Drugs 0.000 abstract 2
- 239000002168 alkylating agent Substances 0.000 abstract 2
- 239000003377 acid catalyst Substances 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 150000001336 alkenes Chemical class 0.000 abstract 1
- -1 aromatic sulphur compounds Chemical class 0.000 abstract 1
- 238000004508 fractional distillation Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A product of reduced sulphur content is produced from a feedstock which is comprised of a mixture of hydrocarbons and contains organic sulphur compounds as unwanted impurities. The process comprises converting at least a portion of the sulphur-containing impurities to sulphur-containing products of higher boiling point by treatment with an alkylating agent in the presence of an acid catalyst and removing at least a portion of these higher boiling products by fractional distillation. Suitable alkylating agents include alcohols and olefins. In a preferred embodiment, catalytic cracking products which contain aromatic sulphur compounds as impurities are used as a feedstock for the process.
Claims (3)
1. A method for producing a product of reduced sulfur content which comprises:
(a) producing catalytic cracking products by catalytically cracking a hydrocarbon feedstock which contains sulfur-containing impurities:
(b) passing the catalytic cracking products to a distillation unit and fractionating said catalytic cracking products into at least two fractions which comprise: (1) a liquid boiling below about 345° C which contains sulfur-containing impurities and (2) material of higher boiling point;
(c) producing a treated liquid by contacting a portion of said fraction (1) from the distillation unit with an acidic solid catalyst at a temperature in excess of 50° C for a period of time which is effective to convert at least a portion of the sulfur-containing impurities in said fraction (1) to a sulfur-containing material of higher boiling point; and (d) returning the treated liquid to said distillation unit and fractionating the treated liquid simultaneously with the catalytic cracking products, whereby at least a portion of the sulfur-containing material of higher boiling point in the treated liquid is removed and a product of reduced sulfur content is produced.
(a) producing catalytic cracking products by catalytically cracking a hydrocarbon feedstock which contains sulfur-containing impurities:
(b) passing the catalytic cracking products to a distillation unit and fractionating said catalytic cracking products into at least two fractions which comprise: (1) a liquid boiling below about 345° C which contains sulfur-containing impurities and (2) material of higher boiling point;
(c) producing a treated liquid by contacting a portion of said fraction (1) from the distillation unit with an acidic solid catalyst at a temperature in excess of 50° C for a period of time which is effective to convert at least a portion of the sulfur-containing impurities in said fraction (1) to a sulfur-containing material of higher boiling point; and (d) returning the treated liquid to said distillation unit and fractionating the treated liquid simultaneously with the catalytic cracking products, whereby at least a portion of the sulfur-containing material of higher boiling point in the treated liquid is removed and a product of reduced sulfur content is produced.
2. The method of claim 1 wherein from about 5% to about 90% by volume of said fraction (1) from said distillation unit is contacted with the acidic solid catalyst in said contacting step.
3. The method of claim 1 wherein said fraction (1) from the distillation unit is a liquid boiling below about 230° C.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/783,221 US6048451A (en) | 1997-01-14 | 1997-01-14 | Sulfur removal process |
| US08/783,221 | 1997-01-14 | ||
| CA002248159A CA2248159C (en) | 1997-01-14 | 1998-01-09 | Sulfur removal process |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002248159A Division CA2248159C (en) | 1997-01-14 | 1998-01-09 | Sulfur removal process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2581692A1 true CA2581692A1 (en) | 1998-07-16 |
| CA2581692C CA2581692C (en) | 2010-11-09 |
Family
ID=38236347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2581692A Expired - Lifetime CA2581692C (en) | 1997-01-14 | 1998-01-09 | Sulfur removal process |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2581692C (en) |
-
1998
- 1998-01-09 CA CA2581692A patent/CA2581692C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2581692C (en) | 2010-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20180109 |