FR2216224A1 - Utilization of sulphuric acid wastes - from paraffin refining, by spray-burning and neutralising to form sulphites - Google Patents
Utilization of sulphuric acid wastes - from paraffin refining, by spray-burning and neutralising to form sulphitesInfo
- Publication number
- FR2216224A1 FR2216224A1 FR7403840A FR7403840A FR2216224A1 FR 2216224 A1 FR2216224 A1 FR 2216224A1 FR 7403840 A FR7403840 A FR 7403840A FR 7403840 A FR7403840 A FR 7403840A FR 2216224 A1 FR2216224 A1 FR 2216224A1
- Authority
- FR
- France
- Prior art keywords
- contg
- wastes
- sulphuric acid
- neutralising
- burning
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/22—Sulfites of ammonium
-
- 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
- C01B17/50—Preparation of sulfur dioxide
- C01B17/58—Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Paper (AREA)
Abstract
Sulphuric acid wastes (acid and oleum tars), e.g. from the refining of n-paraffins with H2SO4 or oleum, with a high H2SO4 content, a high viscosity and a low calorific value (>=1000 kcal/kg) are economically utilised by a continuous process in which (a) the wastes are continuously sprayed in finely divided form (=500 mu) with excess air or O2-contg gas (pref. a =10 vol. % excess) into a cylindrical furnace; (b) the particles are burnt at 900-1200 degrees C for =5 sec. using a gas or oil support burner (pref. fired with S-contg waste or residual oil); (c) the hot SO2-contg. combustion gases are scrubbed with H2O; and (d) the resulting SO2 is reacted with an aqs. alkali metal or NH4 bisulphite soln (pH 4.0-5) to form neutral or acid sulphite salts.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD16867573A DD105598A1 (en) | 1973-02-05 | 1973-02-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2216224A1 true FR2216224A1 (en) | 1974-08-30 |
FR2216224B1 FR2216224B1 (en) | 1980-03-28 |
Family
ID=5489979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7403840A Granted FR2216224A1 (en) | 1973-02-05 | 1974-02-05 | Utilization of sulphuric acid wastes - from paraffin refining, by spray-burning and neutralising to form sulphites |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT326698B (en) |
DD (1) | DD105598A1 (en) |
FR (1) | FR2216224A1 (en) |
SU (1) | SU692774A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0093909A1 (en) * | 1982-05-03 | 1983-11-16 | Bayer Ag | Process for decomposing diluted sulfuric acid |
FR2714665A1 (en) * | 1994-01-06 | 1995-07-07 | Inst Francais Du Petrole | New process for purified sulfuric acid purification. |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2747937C2 (en) * | 1977-10-26 | 1985-11-14 | Winfried 3063 Obernkirchen Rosenstock | Method for driving sheet piles into a rock substrate |
TWI688427B (en) * | 2015-06-17 | 2020-03-21 | 大陸商中國石油化工科技開發有限公司 | Alkylated waste acid treatment method and device for implementing the method |
-
1973
- 1973-02-05 DD DD16867573A patent/DD105598A1/xx unknown
-
1974
- 1974-02-04 SU SU741999172A patent/SU692774A1/en active
- 1974-02-04 AT AT83674A patent/AT326698B/en not_active IP Right Cessation
- 1974-02-05 FR FR7403840A patent/FR2216224A1/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0093909A1 (en) * | 1982-05-03 | 1983-11-16 | Bayer Ag | Process for decomposing diluted sulfuric acid |
FR2714665A1 (en) * | 1994-01-06 | 1995-07-07 | Inst Francais Du Petrole | New process for purified sulfuric acid purification. |
EP0662448A1 (en) * | 1994-01-06 | 1995-07-12 | Institut Francais Du Petrole | Process for the purification of impure sulphuric acid |
US5501847A (en) * | 1994-01-06 | 1996-03-26 | Institut Francais Du Petrole | Process for purifying impure sulphuric acid |
Also Published As
Publication number | Publication date |
---|---|
DD105598A1 (en) | 1974-05-05 |
FR2216224B1 (en) | 1980-03-28 |
AT326698B (en) | 1975-12-29 |
SU692774A1 (en) | 1979-10-25 |
ATA83674A (en) | 1975-03-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |