FR2382402A1 - PROCESS FOR MAKING LIQUID SULFUROUS ANHYDRIDE BY COMBUSTION OF SULFUR. - Google Patents
PROCESS FOR MAKING LIQUID SULFUROUS ANHYDRIDE BY COMBUSTION OF SULFUR.Info
- Publication number
- FR2382402A1 FR2382402A1 FR7806248A FR7806248A FR2382402A1 FR 2382402 A1 FR2382402 A1 FR 2382402A1 FR 7806248 A FR7806248 A FR 7806248A FR 7806248 A FR7806248 A FR 7806248A FR 2382402 A1 FR2382402 A1 FR 2382402A1
- Authority
- FR
- France
- Prior art keywords
- sulfur
- combustion
- making liquid
- sulfurous anhydride
- liquid sulfurous
- 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.)
- Pending
Links
Classifications
-
- 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
- C01B17/54—Preparation of sulfur dioxide by burning elemental sulfur
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
L'invention a pour objet un procédé perfectionné de préparation de SO2 liquide par combustion du soufre en présence d'air suivie d'un refroidissement et d'une liquéfaction sous pression avec séparation de SO2 liquide Ce procédé est caractérisé en ce que le SO2 restant dans le gaz residuaire est oxydé en SO3 qui est transformé en H2 SO4 concentré par absorption; H2 SO4 est ensuite, au moins en partie, dissocié pour donner SO2 . Ce procédé fournit, comme produit secondaire, de l'acide sulfurique à une concentration utilisable.The subject of the invention is an improved process for preparing liquid SO2 by combustion of sulfur in the presence of air followed by cooling and pressurized liquefaction with separation of liquid SO2. This process is characterized in that the remaining SO2 in the waste gas is oxidized to SO3 which is transformed into concentrated H2 SO4 by absorption; H2 SO4 is then, at least in part, dissociated to give SO2. This process provides sulfuric acid at a usable concentration as a side product.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2709455A DE2709455C2 (en) | 1977-03-04 | 1977-03-04 | Process for the production of liquid sulfur dioxide |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2382402A1 true FR2382402A1 (en) | 1978-09-29 |
Family
ID=6002776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7806248A Pending FR2382402A1 (en) | 1977-03-04 | 1978-03-03 | PROCESS FOR MAKING LIQUID SULFUROUS ANHYDRIDE BY COMBUSTION OF SULFUR. |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2709455C2 (en) |
ES (1) | ES467541A1 (en) |
FR (1) | FR2382402A1 (en) |
GB (1) | GB1554129A (en) |
SE (1) | SE7802118L (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AR033774A1 (en) * | 2001-05-31 | 2004-01-07 | Garcia Javier Angel Perez | SULFUROUS ANHYDRIDE PLANT |
CN109052335B (en) * | 2018-07-24 | 2023-08-22 | 上海三夫工程技术有限公司 | Method for preparing liquid sulfur dioxide and sulfuric acid by reducing waste sulfuric acid with sulfur gas |
CN117205856A (en) * | 2023-09-21 | 2023-12-12 | 福建天甫电子材料有限公司 | Automatic control system for electronic grade sulfuric acid production and method for producing electronic grade sulfuric acid |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1359901A (en) * | 1963-03-19 | 1964-04-30 | Ass Chem Co | Sulfur dioxide production process and installation for its implementation |
JPS4899094A (en) * | 1972-03-29 | 1973-12-15 | ||
GB1414258A (en) * | 1973-02-14 | 1975-11-19 | Celleco Ab | Method of producing liquid sulphur dioxide |
-
1977
- 1977-03-04 DE DE2709455A patent/DE2709455C2/en not_active Expired
-
1978
- 1978-02-23 SE SE7802118A patent/SE7802118L/en unknown
- 1978-03-03 GB GB8495/78A patent/GB1554129A/en not_active Expired
- 1978-03-03 FR FR7806248A patent/FR2382402A1/en active Pending
- 1978-03-03 ES ES467541A patent/ES467541A1/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1359901A (en) * | 1963-03-19 | 1964-04-30 | Ass Chem Co | Sulfur dioxide production process and installation for its implementation |
JPS4899094A (en) * | 1972-03-29 | 1973-12-15 | ||
GB1414258A (en) * | 1973-02-14 | 1975-11-19 | Celleco Ab | Method of producing liquid sulphur dioxide |
Also Published As
Publication number | Publication date |
---|---|
SE7802118L (en) | 1978-09-05 |
ES467541A1 (en) | 1978-10-16 |
DE2709455B1 (en) | 1978-05-24 |
DE2709455C2 (en) | 1979-01-25 |
GB1554129A (en) | 1979-10-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
CD | Change of name or company name |