FR2140783A5 - Removing sulphur dioxide - from gases by use of ammonia or ammonium sulphite solns - Google Patents
Removing sulphur dioxide - from gases by use of ammonia or ammonium sulphite solnsInfo
- Publication number
- FR2140783A5 FR2140783A5 FR7120628A FR7120628A FR2140783A5 FR 2140783 A5 FR2140783 A5 FR 2140783A5 FR 7120628 A FR7120628 A FR 7120628A FR 7120628 A FR7120628 A FR 7120628A FR 2140783 A5 FR2140783 A5 FR 2140783A5
- Authority
- FR
- France
- Prior art keywords
- ammonia
- solns
- gases
- sulphur dioxide
- ammonium
- 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.)
- Expired
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
-
- 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
- C01B17/48—Sulfur dioxide; Sulfurous acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (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
An industrial gas contg. SO2 and also O2 and/or SO3, is purified by (a) contacting with aq. ammonia and/or neutral ammonium sulphite soln. so as to form NH4 sulphite and sulphate, (b) heating the soln. so as to evaporate some of the water and to decompose the sulphites to SO2 and NH3 with out decomposing the sulphate, (c) heating the remaining liquid phase in the presence of S, H2S, CO, or ammonium thiosulphate so as to convert the ammonium sulphate to SO2 and NH3, and (d) contacting the SO2 and NH3 from (b) and (c) with H2S to produce S. and then sepg. the S, and condensing the vapours and recycling the condensate to step (a).
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7120628A FR2140783A5 (en) | 1971-06-07 | 1971-06-07 | Removing sulphur dioxide - from gases by use of ammonia or ammonium sulphite solns |
BE783783A BE783783A (en) | 1971-06-07 | 1972-05-23 | PROCESS FOR THE CLEANING OF INDUSTRIAL GASES CONTAINING SULFUR DIOXIDES |
GB2588872A GB1398986A (en) | 1971-06-07 | 1972-06-02 | Process for purifying industrial gases containing sulphur cioxide |
JP5555972A JPS5611489B1 (en) | 1971-06-07 | 1972-06-02 | |
DE2227086A DE2227086C2 (en) | 1971-06-07 | 1972-06-03 | Process for cleaning an industrial waste gas |
CA143,927A CA970136A (en) | 1971-06-07 | 1972-06-05 | Procede d'epuration des gaz industriels contenant des dioxydes de soufre |
US260279A US3883643A (en) | 1971-06-07 | 1972-06-06 | Process for purifying industrial gases containing sulfur dioxides |
NL7207632A NL7207632A (en) | 1971-06-07 | 1972-06-06 | |
SU721792901A SU593645A3 (en) | 1971-06-07 | 1972-06-06 | Method of purifying industrial gases from sulfurous acid anhydride |
DK280672AA DK140875B (en) | 1971-06-07 | 1972-06-06 | Process for removing sulfur dioxide and sulfur trioxide from a gas containing these. |
NO2006/72A NO135772C (en) | 1971-06-07 | 1972-06-06 | |
SE7207404A SE390702B (en) | 1971-06-07 | 1972-06-06 | PROCEDURE FOR PURIFICATION OF AN INDUSTRY FROM SULFUR OXIDES USING AMMONIA AND / OR NEUTRAL AMMONIUM SULPHITE AND AS THE FINAL PRODUCT RECEIVE ELEMENTS SULFUR |
IT25331/72A IT959785B (en) | 1971-06-07 | 1972-06-07 | PROCESS FOR THE PURIFICATION OF INDUSTRIAL GASES CONTAINING SULFUR DIOXIDES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7120628A FR2140783A5 (en) | 1971-06-07 | 1971-06-07 | Removing sulphur dioxide - from gases by use of ammonia or ammonium sulphite solns |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2140783A5 true FR2140783A5 (en) | 1973-01-19 |
Family
ID=9078259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7120628A Expired FR2140783A5 (en) | 1971-06-07 | 1971-06-07 | Removing sulphur dioxide - from gases by use of ammonia or ammonium sulphite solns |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2140783A5 (en) |
-
1971
- 1971-06-07 FR FR7120628A patent/FR2140783A5/en not_active Expired
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |