WO1994016990B1 - Method for removing sulfide with catalytic carbon - Google Patents
Method for removing sulfide with catalytic carbonInfo
- Publication number
- WO1994016990B1 WO1994016990B1 PCT/US1994/000884 US9400884W WO9416990B1 WO 1994016990 B1 WO1994016990 B1 WO 1994016990B1 US 9400884 W US9400884 W US 9400884W WO 9416990 B1 WO9416990 B1 WO 9416990B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nitrogen
- catalytically
- sulfide
- sulfides
- amended
- 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.)
- Ceased
Links
Abstract
An improved process is provided for the selective removal of sulfide from gas or liquid media containing oxygen and water by contacting said media with a catalytically-active carbonaceous char. The improvement is provided by the use of a catalytically-active carbonaceous char prepared by low-temperature carbonization and oxidation of a bituminous coal or bituminous coal-like material followed by exposure to a nitrogen containing compound at high-temperatures during the initial calcination and/or activation of the oxidized material.
Claims
1. A process for the removal of sulfides from gas or liquid media which comprises contacting said media, in the presence of oxygen and water, with a catalytically-active carbonaceous char, said char being prepared from a bituminous coal or a coal having bituminous properties carbonized and oxidized at temperatures below 700° C and subjected thereafter to nitrogen-containing compounds while heating to temperatures greater than 700° C.
2. A process as set forth in Claim 1 wherein said catalytically-active carbonaceous char has been activated at temperatures above 700° C using at least one of steam, carbon dioxide, and oxygen.
3. The process of Claim 1 wherein the sulfide is hydrogen sulfide.
4. The process of Claim 1 wherein said process is operated at a temperature of between 0° C and 300° C to remove said sulfides.
5. The process of Claim 1 wherein said process is operated at a temperature of between about 25° C and 90° C to remove said sulfides.
6. A process as set forth in Claim 1 wherein said nitrogen-containing compounds are urea and nitrogen-containing compounds having at least one nitrogen-containing functionality in which the nitrogen exhibits a formal oxidation number less than that of elemental nitrogen. STATEMENT UNDER ARTICLE 19(1)
Applicant has amended the claims by clarifying the fact that the process uses a catalytically-active carbonaceous char. The process involves the catalysis of sulfide and not merely the adsorption by an activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6517278A JP2572206B2 (en) | 1993-01-21 | 1994-01-21 | Removal method of sulfide by catalytic carbon |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US872393A | 1993-01-21 | 1993-01-21 | |
| US08/008,723 | 1993-01-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1994016990A1 WO1994016990A1 (en) | 1994-08-04 |
| WO1994016990B1 true WO1994016990B1 (en) | 1994-09-01 |
Family
ID=21733292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1994/000884 Ceased WO1994016990A1 (en) | 1993-01-21 | 1994-01-21 | Method for removing sulfide with catalytic carbon |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2572206B2 (en) |
| CA (1) | CA2131987A1 (en) |
| WO (1) | WO1994016990A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5637232A (en) * | 1996-03-11 | 1997-06-10 | Calgon Carbon Corporation | Process for the catalytic oxidation of ferrous iron in liquid media |
| KR101439504B1 (en) | 2012-10-09 | 2014-09-15 | 주식회사 포스코 | Method of active carbon for removing hydrogen sulfide and active carbon manufactured by the same |
| KR101512562B1 (en) | 2013-08-20 | 2015-04-16 | 대전대학교 산학협력단 | A process for producing biomass adsorbent from platanus leaves |
| KR102532439B1 (en) | 2015-06-01 | 2023-05-16 | 칼곤 카본 코포레이션 | Method for inactivating activated carbon in a biogas refinery plant |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US737579A (en) * | 1902-12-06 | 1903-09-01 | Ernst Burschell | Process of purifying gas. |
| GB411918A (en) * | 1932-01-04 | 1934-06-18 | Franz Krczil | Improvements in the methods and means for producing active charcoal or for re-activating spent charcoal |
| US3630959A (en) * | 1969-06-04 | 1971-12-28 | Standard Oil Co Ohio | Carbonization of bituminous coals |
| JPS5220395A (en) * | 1975-08-08 | 1977-02-16 | Mitsubishi Petrochem Co Ltd | Process for producing porous carbonaceous particles |
| DE4109892C2 (en) * | 1991-03-26 | 1994-12-22 | Metallgesellschaft Ag | Process for removing hydrogen sulfide from gases using activated carbon |
-
1994
- 1994-01-21 CA CA002131987A patent/CA2131987A1/en not_active Abandoned
- 1994-01-21 WO PCT/US1994/000884 patent/WO1994016990A1/en not_active Ceased
- 1994-01-21 JP JP6517278A patent/JP2572206B2/en not_active Expired - Lifetime
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