ES357411A1 - Procedure for the obtaining of sulfuric acid by catalytic oxidation under gas pressure with small content in so2. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the obtaining of sulfuric acid by catalytic oxidation under gas pressure with small content in so2. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES357411A1 ES357411A1 ES357411A ES357411A ES357411A1 ES 357411 A1 ES357411 A1 ES 357411A1 ES 357411 A ES357411 A ES 357411A ES 357411 A ES357411 A ES 357411A ES 357411 A1 ES357411 A1 ES 357411A1
- Authority
- ES
- Spain
- Prior art keywords
- gases
- catalytic
- catalytic oxidation
- translation
- procedure
- 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
-
- 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
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
- C01B17/762—High pressure processes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Treating Waste Gases (AREA)
Abstract
Sulphuric acid is made by the catalytic oxidation of gases having an S0 2 content of not more than 12% volume wherein the catalysis is carried out at a pressure of 3-9 bars absolute either in one or two catalytic stages, each catalytic stage comprising passing the gas through one or more layers of catalyst and absorbing the S0 3 formed in water, the residue gases leaving the final absorption step being heated prior to expansion. Gases obtained by burning sulphur or gases obtained by roasting sulphides or the decomposition of sulphates and having S0 2 contents of 4-9% may be used. The process may be performed in a single catalytic stage comprising passing the gas through three catalyst layers before SO 3 absorption or in two catalytic stages, the first comprising two or three catalyst layers and an absorption step and the second comprising a single layer and an absorption step. The gases leaving the final absorption may be heated by heat exchange with reactant gases and/or through direct or indirect combustion of fuel. A variety of suitable heat exchanger arrangents are disclosed. The gases may be expanded through a turbine, cooled and exhausted at at least 150 C.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR118648A FR1541087A (en) | 1967-08-22 | 1967-08-22 | Process for obtaining sulfuric acid by pressure catalysis from gas with a low SO2 content |
FR133630A FR93688E (en) | 1967-08-22 | 1967-12-22 | Process for obtaining sulfuric acid by pressure catalysis from gas with low SO2 content. |
Publications (1)
Publication Number | Publication Date |
---|---|
ES357411A1 true ES357411A1 (en) | 1970-03-01 |
Family
ID=26179003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES357411A Expired ES357411A1 (en) | 1967-08-22 | 1968-08-21 | Procedure for the obtaining of sulfuric acid by catalytic oxidation under gas pressure with small content in so2. (Machine-translation by Google Translate, not legally binding) |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT296341B (en) |
BE (1) | BE719684A (en) |
ES (1) | ES357411A1 (en) |
FR (1) | FR93688E (en) |
GB (1) | GB1230130A (en) |
IL (1) | IL30564A (en) |
NO (1) | NO126522B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4213958A (en) * | 1977-11-14 | 1980-07-22 | Canadian Industries Limited | Production of sulphur trioxide, sulphuric acid and oleum |
SE8402092L (en) * | 1984-04-13 | 1985-10-14 | Boliden Ab | PROCEDURE FOR EXPLORING LOW Sulfur Dioxide Content from Exhaust Gas |
-
1967
- 1967-12-22 FR FR133630A patent/FR93688E/en not_active Expired
-
1968
- 1968-08-16 IL IL30564A patent/IL30564A/en unknown
- 1968-08-19 BE BE719684D patent/BE719684A/xx not_active IP Right Cessation
- 1968-08-20 GB GB1230130D patent/GB1230130A/en not_active Expired
- 1968-08-21 AT AT815768A patent/AT296341B/en not_active IP Right Cessation
- 1968-08-21 NO NO3280/68A patent/NO126522B/no unknown
- 1968-08-21 ES ES357411A patent/ES357411A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1230130A (en) | 1971-04-28 |
BE719684A (en) | 1969-02-03 |
IL30564A (en) | 1972-02-29 |
AT296341B (en) | 1972-02-10 |
NO126522B (en) | 1973-02-19 |
FR93688E (en) | 1969-05-02 |
IL30564A0 (en) | 1968-10-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19870710 |