FR2201118A1 - Sulphur dioxide removal from stack gas - by reacting with aq ammonia, and recovering as sulphur - Google Patents
Sulphur dioxide removal from stack gas - by reacting with aq ammonia, and recovering as sulphurInfo
- Publication number
- FR2201118A1 FR2201118A1 FR7235266A FR7235266A FR2201118A1 FR 2201118 A1 FR2201118 A1 FR 2201118A1 FR 7235266 A FR7235266 A FR 7235266A FR 7235266 A FR7235266 A FR 7235266A FR 2201118 A1 FR2201118 A1 FR 2201118A1
- Authority
- FR
- France
- Prior art keywords
- sulphur
- recovering
- ammonia
- reacting
- dioxide removal
- 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
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
- C01B17/05—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides by wet processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (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)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
Waste gas, e.g. from H2SO4 mfr. is cleaned of SO2, SO3, etc. by reaction with aq. NH3 at 30-85 degrees C. The salt soln. formed is then bubbled through with water vapour at 100-160 degrees C, and the Nh3 and SO2 are carried away in the gas stream and the scrubbing liquid recirculated. The gas stream is then reacted with H2S to ppte. S, which is separated from the NH3, and the NH3 recirculated.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7235266A FR2201118A1 (en) | 1972-10-04 | 1972-10-04 | Sulphur dioxide removal from stack gas - by reacting with aq ammonia, and recovering as sulphur |
JP48111923A JPS4972196A (en) | 1972-10-04 | 1973-10-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7235266A FR2201118A1 (en) | 1972-10-04 | 1972-10-04 | Sulphur dioxide removal from stack gas - by reacting with aq ammonia, and recovering as sulphur |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2201118A1 true FR2201118A1 (en) | 1974-04-26 |
FR2201118B1 FR2201118B1 (en) | 1977-07-29 |
Family
ID=9105212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7235266A Granted FR2201118A1 (en) | 1972-10-04 | 1972-10-04 | Sulphur dioxide removal from stack gas - by reacting with aq ammonia, and recovering as sulphur |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2201118A1 (en) |
-
1972
- 1972-10-04 FR FR7235266A patent/FR2201118A1/en active Granted
Non-Patent Citations (1)
Title |
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NEANT * |
Also Published As
Publication number | Publication date |
---|---|
FR2201118B1 (en) | 1977-07-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |