FR2208702A1 - Sulphur cpds. removal from kiln gases - by oxidn. to sulphur trioxide and absorption in aq. ammonia - Google Patents
Sulphur cpds. removal from kiln gases - by oxidn. to sulphur trioxide and absorption in aq. ammoniaInfo
- Publication number
- FR2208702A1 FR2208702A1 FR7243119A FR7243119A FR2208702A1 FR 2208702 A1 FR2208702 A1 FR 2208702A1 FR 7243119 A FR7243119 A FR 7243119A FR 7243119 A FR7243119 A FR 7243119A FR 2208702 A1 FR2208702 A1 FR 2208702A1
- Authority
- FR
- France
- Prior art keywords
- sulphur
- cpds
- ammonia
- oxidn
- absorption
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
- B01D53/523—Mixtures of hydrogen sulfide and sulfur oxides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
Kiln gases contg. S cpds., e.g. H2S, SO2, COS and CS2, are treated by (a) catalytically oxidising the cpds. to SO2 and then to SO3; and (b) absorbing the SO3 with water and aq. ammonia at 50-120, pref. 70 degrees C, at 1-4, pref. 1 atmos. and at a NH3:SO3 ratio of =2:1. The effluent from (b) is concentrated and treated with a reducing agent at high temp. to yield gaseous SO2. The NH3 and SO2 from this stage can be treated with H2S to yield S which is recovered, and NH3 which is recycled to (b).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7243119A FR2208702A1 (en) | 1972-12-04 | 1972-12-04 | Sulphur cpds. removal from kiln gases - by oxidn. to sulphur trioxide and absorption in aq. ammonia |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7243119A FR2208702A1 (en) | 1972-12-04 | 1972-12-04 | Sulphur cpds. removal from kiln gases - by oxidn. to sulphur trioxide and absorption in aq. ammonia |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2208702A1 true FR2208702A1 (en) | 1974-06-28 |
FR2208702B1 FR2208702B1 (en) | 1976-04-23 |
Family
ID=9108185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7243119A Granted FR2208702A1 (en) | 1972-12-04 | 1972-12-04 | Sulphur cpds. removal from kiln gases - by oxidn. to sulphur trioxide and absorption in aq. ammonia |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2208702A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016198369A1 (en) * | 2015-06-12 | 2016-12-15 | Haldor Topsøe A/S | Hydrogen sulfide abatement via removal of sulfur trioxide |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1087028A (en) * | 1965-07-03 | 1967-10-11 | Toyo Koatsu Ind Inc | Method of treating exhaust gases containing sulphur dioxide |
-
1972
- 1972-12-04 FR FR7243119A patent/FR2208702A1/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1087028A (en) * | 1965-07-03 | 1967-10-11 | Toyo Koatsu Ind Inc | Method of treating exhaust gases containing sulphur dioxide |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016198369A1 (en) * | 2015-06-12 | 2016-12-15 | Haldor Topsøe A/S | Hydrogen sulfide abatement via removal of sulfur trioxide |
Also Published As
Publication number | Publication date |
---|---|
FR2208702B1 (en) | 1976-04-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |